Contour RollerMouse Red Ergonomic Mouse with Memory Foam Palm Support | Ideal for RSI and Carpal Tunnel | Mac & PC Compatible | Ambidextrous Mouse for PC, Mac & Laptop - Wired

Wow! Honestly, I said that out loud the first time I used the RollerMouse Red. This mouse is beyond imaginable expectations. It is butter-smooth, precise, customizable, and solidly built with unrivaled professional quality. I purchased the RollerMouse Red via Amazon from Contour Design, and it was promptly mailed and arrived on the fifth day. I chose the Red over the Red Plus because I didn’t like the idea of reaching that extra two inches or so to my keyboard, especially given that my Kinesis keyboard already increases the reach to the keys by about three inches beyond that of a regular keyboard. I have large hands, and despite recommendations that people with larger hands should get the Red Plus, the RollerMouse Red is a perfect fit for me. Some people have asked if the RollerMouse Red works with the Kinesis Advantage Keyboard, and I read that at least one person could not use it with the Kinesis. I bought the Kinesis Advantage MPC/USB keyboard at the same time I bought the RollerMouse Red. I use both devices with a Windows 7, 64 bit system. I find the two devices to be a perfect match, but I acknowledge I don’t position the RollerMouse Red as specified in the user manual. I assume that the advice to position the RollerMouse so the rollerbar is slightly below the keyboard spacebar may be intended to satisfy some ergonomic rule, but I use the RollerMouse Red without keyboard risers so it sits flat on the desktop, pushed right up against the front of the Kinesis keyboard. The rollerbar is so sensitive and responsive that I can use it to block text or move the cursor from one side of my two 27-inch monitors to the other side with minimal finger movement and without caring if the front edge of the keyboard abuts the RollerMouse aluminum housing. (The aluminum housing touches the Kinesis keyboard body, but the rollerbar itself is about 1/8 of an inch away from it at the edges and 3/16 of an inch away from it at the center because the keyboard has a concave front edge.) By having the roller bar sitting below the top edge of the Kinesis keyboard, I also don’t have the problem of accidentally clicking the roller bar. In this position, I also have no interference when using the middle, rubber-ridged scroll wheel for scrolling through documents or web pages. The scroll wheel is, itself, a pleasure to use—precise, fast, and perfectly sized–much more comfortable to use than that on a regular mouse. It’s actually my favorite feature because I spend a lot of time scrolling within documents. I use both right and left hands with the scroll wheel, but the rollerbar and all the buttons easily can accommodate ambidextrous use for those who may have injured a dominant upper extremity. I use the RollerMouse Red with mostly factory default settings. I adjusted the cursor acceleration to the first stop to accommodate my caffeine-induced hand shaking! I also customized the middle, rubber-ridged scroll wheel “click” so that instead of being a “scroll lock,” it mutes my system sound. You may need to download and install the drivers to make these customizations. I was puzzled that the drivers don’t appear to be advertised, but they are at the ergo.contour-design website: http://ergo.contour-design.com/support-and-downloads/drivers You can also find video reviews and other links at their website. Many months ago, I had to switch from the DasKeyboard to a Filco TenKeyless keyboard to be able to use my mouse without pain. At that time, I also bought a 2014 Razer Naga mouse. Using both of these devices cured my right arm/hand pain, but recently, my left wrist became painful, so I began searching for a new keyboard and stumbled across the Kinesis Advantage. The learning curve for that is another story, but between it and the RollerMouse Red, I am now pain free for my 8- to 12-hour typing days. I know from learning to type on the Kinesis keyboard and learning to use the RollerMouse Red during the same time span that learning curves vary between devices. I anticipate a full month before I master the Kinesis keyboard, but the RollerMouse Red took just a few minutes before I could use it efficiently, and by the end of the first day, I was proficient. Most of the “learning” is learning not to reach for the regular mouse! Quite a few reviewers have remarked that the RollerMouse Red is expensive. It isn’t. Pain and lack of productivity are expensive. Doctor visits are expensive. Physical therapy and surgery are expensive. If you’re at the point of considering those, try this first. I was not asked to write this review, and I have no financial interest in the company. It’s just that I rarely have found such a high quality product. The company that builds something like this, infusing it with the quality found here, must be encouraged to continue doing so.

I have had chronic hand pain since 2012 (when I was 21 years old) that doctors have been unable to diagnose. Using a conventional mouse at my job as a software developer became so difficult and painful, I was desperate for a solution. I tried a sideways mouse, but that type of mouse still required the device to be shuffled around on a mousepad, which is hard on the wrist. I found Rollermouse Red and decided to purchase it despite the steep price tag. After 2 years of use, I can say the price is definitely worth it. This mouse has made it possible for me to continue working with less hand pain than if I continued using a normal mouse. Pros: -The roller allows cursor movement with just your finger tips, rather than requiring gripping and excessive wrist movement. -Because the mouse sits in the center, it allows switching between both hands, which can prevent strain on your dominant hand. -Again, since the mouse sits in the center, I no longer have to reach for a mouse on one side or the other. This has reduced strain on my right shoulder that I was experiencing along with my hand pain. This also greatly increases efficiency with my work, considering my keyboard is right there up against the mouse. -I love the physical buttons and the scroll wheel. I use all of them regularly. The copy/paste/double-click buttons are extremely helpful in my work. The buttons have great tactile feedback, and their placement works well. -The mouse is decently heavy, so it won't slide around. -The wrist rest is comfortable. Cons: -Moving the cusor accurately with this mouse does take some getting used to, which can be frustrating at first. -When the roller reaches the end of its bar, the cursor will slingshot to the side of the screen. This can get annoying if you're not watching where the roller is. Don't know if there's any real way to fix this in future designs. -I sometimes wonder if a roller with less width would be better. My hands are fairly small, so it can feel like a chore to move around such a large roller if my hand pain is flaring up. -The roller itself doesn't have very tactile feedback for clicking. This isn't a big deal since there's a left click button as an alternative. -Transporting it can be kind of annoying because the mouse is rather large. Its box protects it well, but it's too big to fit in an average purse. -It's difficult to keep the little crevices of the mouse clean. Overall, this is an extremely well-designed mouse that helps prevent repetitive stress pain in ways a typical mouse cannot. I would also like to mention the excellent customer service I received from Contour. 2 years and 2 months after purchase, my Rollermouse Red started having irregular cursor movement at times. It forced me to put a conventional mouse back on my desk as back-up, which was bringing me more pain in my hands and shoulder. I tried cleaning the mouse with compressed air and installing the official software, with no success. I found on Contour's website that the product has a 2-year warranty, which meant mine was barely outside of it. I decided to try contacting Contour anyway through their online form, asking for any possible solution to the behavior. I received a response in a few days. The representative suggested removing the roller and cleaning underneath it. They gave me detailed instructions on how to do this, along with pictures of each step. As far as I could find, these instructions were not on their website; it might help other customers if they did post it, now that I think about it. Anyway, my point is that their response was incredibly detailed, even though my mouse was outside of the warranty period. Cleaning under the roller seems to have solved the cursor movement problem, allowing me to continue working with less pain. I am very grateful for Contour's professional customer service.

First one I ordered from Amazon was a dud, could not control the mouse and it jumped all over the screen. Finally after trying on a few different computers and user, sent it back and then immediately ordered a replacement which works flawlessly. It's pricey, but worth it if you are having wrist/hand pain or poor ergonomics as I have. Before purchasing, I experimented with putting the wireless mouse trackpad on the middle of my wrist rest up against the keyboard to mimic this design, and it immediately relieved some of my strain. The RollerMouse works even better than my makeshift set up because the rollerbar is much easier to control with a very light touch, and the double click button is invaluable. I just got the replacement out of the box and am typing this review. Feels like my typing speed is faster and using the wheel to control vertical page scrolling is very nice and much easier than clicking the arrow, I realized this when I got arm pain just from reading webpages without typing anything -- the clicking and scrolling and using the back and forward arrow was strenuous.

Before I start the review, you will have noticed that fellow reviewers aren't sure how to clean this device. Probably because the information on how to do that is buried in Contour's (the company behind this product) website in a FAQ support page. That along with the .pdf manual for this device to disable things like tap to click. More on that later, right now I'mma show you how to take it apart to clean it. First what you will need is preferably two hands. Secondly, have at least one "UltimateCloth". It is a cloth that uses a material called Mirafiber Fabric that is more fine than "microfiber cloths". It also only uses water to get itself damp so no need for alcohol or other harsh cleaning solutions that will damage this device. Those UltimateCloths can be bought here on Amazon. Here's a basic set of them: https://www.amazon.com/Ultimate-Cloth-Mirafiber-EcoFriendly-Multi-Surface/dp/B016ARTAWK/ref=sr_1_5?dchild=1&keywords=ultimate%2Bcloth&qid=1600529808&sr=8-5&th=1 They're a little bit expensive but they can also be reused and machine washed, even bleached if necessaary. Just get them, it will make this way easier. Now that you have those things prepared, here's what you do. I have the photos of what to do attached to this review, so reference those as I summarize what is done in all 27 of said photos. Firstly, you see those two black end caps at the end of each side of the rubber roller bar? Those can be pressed inwards towards the rubber roller bar which will cause them to click, and then they can be carefully removed. Set the two end caps aside at their respective ends so you don't mix them up later when putting the device back together. Afterwards, the metal bar that the rubber roller bar rests on top of has two magnetic pins at each end of the metal bar. Those hook/rest into a metal magnetic slot at both ends. Carefully apply enough force to remove the metal bar from the magnetic slots on both sides. WARNING: There should be a ribbon cable to the left opening of the metal bar. This can break if you aren't careful. So again, carefully apply force, don't go full caveman mode on it! After the metal bar is removed, it is now possible to slide off the rubber roller bar off the metal bar. Again, figure out a way to remember which way the rubber roller bar was so you don't get confused later when reattaching everything. At this point, there's an extra option you can do, and that is to clean the metal gutter that holds the metal bar and the rubber roller bar. That gutter tends to gather gunk and other stuff into there, so if you want to clean that you can. However this mostly won't affect the performance/smoothness of the RollerMouse RED. This is simply for cosmetic purposes. Hence why it is optional. With that out of the way, and with everything taken apart, set the pieces aside and take your UltimateCloth. Get it fully soaked with water. Preferably under a sink since that would be the easiest way to do so. Once it is fully soaked, twist the UltimateCloth to "wring it". This is to get rid of a lot of the mositure. Keep doing that tightly enough that no more water drips out of the cloth. Now you should have a "damp" UltimateCloth that isn't dripping water everywhere. WARNING: If you notice from the pictures, in the center of the metal bar are the sensors that the rubber roller bar uses. While cleaning the metal bar in this next step, be sure to not touch those! With your newly dampened UltimateCloth, you basically just wipe the metal bar. Basically jerk it off is what I'm saying. While avoiding the sensor in the middle. However the metal underneath the sensor is fair game. This next step is also optional but this time this does effect performance if you want to squeeze that extra bit of smoothness out of this device. Personally I do it because it isn't too hard to do. Take your dampened UltimateCloth, twist one of the ends so that it is less floppy and easier to aim, then take that twisted end and shove it into the rubber roller bar. Keep twisting the cloth inward of the rubber roller bar until the UltimateCloth's twisted end can be grabbed onto through the other end. Once the UltimateCloth is sticking outside of both ends, you basically want to "floss it" so to speak. Take either end of the UltimateCloth sticking out, and pull it, then pull the other side of the UltimateCloth, and so on. You can do this as many times as you'd like. I'd say 4 sets of pulls on either side will do the trick. Do more if you'd like. Once you're done with that optional step, pull the UltimateCloth out of the rubber roller bar. Now that your components are cleaned, you're reading to put it back together again. Firstly, take the rubber roller bar and slide the metal bar back on into it. Make sure the rubber roller bar doesn't slide to either end as you're doing this. Secondly, take the left side of the metal bar, find those two magnetic pins and hook them into the magnetic metal slot to the left of the RollerMouse RED's base. Thirdly, do the same with the right side. Double check to make sure everything is probably hooked into their respective slots. Fourthly, reattach the black end caps you set aside early on. Now your RollerMouse RED is fully cleaned and should feel absolutely STELLAR again! Seriously though, I forget how insanely smooth this thing is every time I'm done cleaning it! ===== = ===== With that process out of the way, what about the actual usage of the device? What the RollerMouse RED essentially is, is a combination of multiple types of mice in one chaotic jack of all trades device. I've used trackballs, trackpads, mice, trackpoints, and drawing tablets, and this device takes aspects of all of those into one comprehensive device. If that sounds extremely chaotic to you, it is because it is. So while there is a learning curve, it is also surprisingly lower than you'd might expect. As for HOW to use it is where things get very fun, and very interesting very fast! That's because there are many different ways to use it based on what parts of your hands you wish to rest. For example, you can do the traditional way, which is to have one hand on the keyboard, and one hand (usually the main three fingers, and having the pinky/thumb manage the mouse buttons) on the RollerMouse RED. IMPORTANT: PRO TIP: According to the electronic manual, you want your keyboard's space bar positioned higher than the RollerMouse RED. If your keyboard is extremely thin, there should be two plastic keyboard risers in the box to prop your keyboard up to the necessary height. This prevents any accidental mouse movements when typing. PRO TIP 2: Contour's website also has software so you can rebind the mouse buttons on your RollerMouse RED along with profiles for specific applications of your choice. So if the default button functions are difficult to use, feel free to rebind them. Here's where you can find the electronic manual and the software to rebind your buttons: https://www.contourdesign.com/product/rollermouse-red/ Its at the end of the page in the "Downloads" section or something similar. The electronic manual also teaches you how to change the DPI (basically the mouse speed of the RollerMouse RED), how to disable tap to click, along with other things. Just download it so you can refer to it if you have any of those basic questions. Anything more specific can be found on Contour's FAQ page or their support page. Which can be found by clicking "Support" on their website, then clicking "Troubleshooting Solutions". With those major tips out the way, back to the review! Even with just traditionally using the RollerMouse RED, due to how its positioned, you can also switch hands at will. So unlike with say a trackball where you need to reposition the entire thing onto the other side of your computer set up THEN start using it with your other hand, with the RollerMouse RED you "just do it". Another way to use it is with your thumbs while the other 8 fingers on your (hopefully) two hands are managing the keyboard. For example, having your right thumb managing cursor control, while your left thumb manages the mouse buttons. This is great if you need your hands on the keyboard at all times and don't want to move your hands excessively. Great for office work to avoid RSI! And again, you can swap thumbs on a dime should one of them get fatigued from cursor control and vice versa. So you technically have a "finger" and a "thumb" mouse at the same time, along with having a "lefty" and a "righty" handed mouse at the same time. The ability to "just do it" as you see fit will take some time to get used to. Especially if you want to use your thumbs to control the mouse for cursor control. With some practice, you can fluidly change between these positions as you wish to prevent RSI from doing the same motions with the same hand over and over again. Right hand is tired? Just use the left! As for DPI/mouse-speed, it can go pretty high if you want! It has a range of as low as 600 DPI, all the way up to a meaty 2400 DPI! But what happens if you reach the end of either side of the metal bar with the rubber roller bar? What ends up happening if that the cursor will automatically drift horizontally in that direction. So if I have 3 monitors, and I'm on the left most one, if I keep moving the rubber roller bar to the right until it reaches its end, the cursor will "drift" to the right until I stop. You cannot aim it up or down while the cursor is drifting. As for things like gaming cursor drift, the RollerMouse RED surprisingly has none! I played osu! with it and no matter how long I played that game, the rubber roller bar always kept its position relative to the cursor! A way to test if your mouse has cursor drift (which is common if it does), is to spin your cursor in a circle. Try to maintain that circle in the center of the screen. What will end up happening is that your mouse will quickly get out of position relative to the cursor. Some gamers also call this "mouse drift". So I repeat: The RollerMouse RED DOES NOT have mouse drift! Now what are some things I don't like about this device? Well take one look at the price. While it is basically several mice in one, a Swiss Army Knife of mice so to speak, at the end of the day, several hundred USD is still several hundred USD. Its EXPENSIVE. The second thing I don't like is that cleaning it, as you've seen, while not "difficult" per say, it does take some concentration and can be time consuming based on how careful you're being, and with how expensive this thing is, you really want to take your time with maintenance/cleaning-it! Thirdly, the software to bind your mouse buttons has a specific requirement for how you bind them. There should be three "main buttons" on the RollerMouse RED. Labeled as "left click, right click, and double click" respectively. You need to have one of them binded to the actual mouse function of left click or right click. Afterwards, you can bind you mouse buttons how you wish. But you cannot bind left click on the "copy" button for example to have it act for the primary requirement. That is because with the profile feature, the "non-main buttons" are what you bind to each profile. That means if I want the copy button to open a map in a game, I make a profile, bind that button to the respective key that opens the map, apply it to the .exe file of the game, and now when I open that game, that profile should automatically be activated with that layout. So yeah, while it is annoying to lose out on two buttons on the primary mouse button cluster, it does make sense in context as to prevent the user from unbinding essential mouse buttons. It would be awkward to accidentally unbind left click and now you can't use your mouse. So this mouse does have fail-safes on that front. So that is more of a nitpick on my end. The other thing I don't like about it is that it only works with "orthodox keyboards". Essentially the typical default rectangle we all know and might love/hate. This means you cannot use any super specialized keyboard that are "ergonomic" or have a built in wrist rest since the RollerMouse RED in it of itself is a wrist rest. (Or a armrest if you bought the arm rest attachment) Speaking of wrist rests, there's three sized, small (the default most of the time), the "pro" or "plus" variant which is the large size, and finally the arm rest. It is meant for things like standing desks but I just find it more comfortable in general so I just use that one all the time. Continuing on with the cons, the coating on the mouse buttons aren't very good. You can even see the finish's rubbed off surface in the photos of this review! (Context: The year i got this device, I played a game called Terraria a lot which uses the left click a lot. The two buttons that "faded" finish wise, those two I binded to left click hence why their finish is in particularly scuffed condition!) The final thing I don't like about it, is that the one I got is a wired one and the wire for the RollerMouse RED is disturbingly thin. For a device THIS expensive, I wouldn't mind the wire being a bit thicker because otherwise it looks alarmingly fragile. So I wouldn't recommend this for travel. They do sell a wireless version however. So if this does seem like something you want to try out on the go, go with the wireless version so you don't break the awkwardly thin wire on the wired version! With all those negatives and the rest of the review out of the way, would I recommend it? For most people, probably not. This is a incredibly niche product for people who want the jack of all trades (master of some) mouse. For most people, something like a "X-keys L-Trac Trackball" would be a more orthodox option and significantly easier to get into. Put a high quality pool ball into it and the smoothness will also be roughly on par with the RollerMouse RED. With something like the RollerMouse RED, it is kind of hard to visualize how it would "be like" in the day to day. Contour does however offer a 30 day trial program on their website that allows you to try this device out for free plus or minus shipping and handling. And if you like it, you can keep it. If not, you can send it back. With how expensive it is, and if you have any doubts on its usefulness on your day to day, I HIGHLY recommend the 30 day trial so you don't just waste almost $300 USD on something that might not fit your unique needs. But overall, for its intended niche, it is a very excellent product. A almost unreal amount of smoothness (when clean), extremely great at preventing RSI with how easy it is to switch hand styles on the fly! Many many small details to really tailor it almost perfectly to how you want it! The materials are very solid where it counts! The rubber roller bar has a great grip on your fingers so you don't have to worry about your hands falling off! Very ergonomic in a way that is more easy to use by a large range of hand types instead of those hyper lazer focused specialized mice which only works one way, and then you'd have to buy more mice to fit the other hand/thumb! Not with this mouse! Its an all in one stop for ergonomics as far as mice goes! It isn't flawless, but it is in a niche all of its own. Finally, while there are multiple versions of RollerMice on the market. I do believe this one, the "RollerMouse RED" is the best of them. The other ones seem to have tracking issues whereas this one is basically a gaming grade sensor, and due to the lack of mouse drift, arguably better than "gaming grade sensors"! Other RollerMice also have issues with fingers unable to probably rest on the rubber bar as user's fingers tend to fall off the device. The RollerMouse RED's rubber roller bar has moderately sized rubber dimples that have a firm but not excessive grip on your fingers. So while the RolerMouse RED tends to be, on average, about $30 - $50 (USD) more expensive than other RollerMice, honestly just do it. You're already spending almost $300 on these things, you might as well get the best one out of all them!

RollerMouse are much more ergonomically comfortable for me than traditional mice. I've been using a RollerMouse Free2 for years, and bought the Red because it would be easier to clean the lint, etc that accumulates under the bar. The RollerMouse Red is still a great product but the button clicks take a bit more effort and periodically (sometimes when I'm not even touching the bar or buttons) it will click when I'm not trying to click. My only other complaint so far is that I find that the bar ends up away from my left hand more often than with the Free2 when I need the cursor on the right half of my screen. On the plus side, it was easy to set it up and customize the cursor speed, upper button actions, etc, and it should be easy to pop out the bar to clean underneath it when needed. Also, the pad to the side of the buttons is very slightly curved up, which encourages more ergonomic wrist position while typing while not being tall enough to get in the way.

***************************************************************************** UPDATE: March 2021: ***************************************************************************** My original Roller Mouse was finally almost dead. The wrist pad was in a very bad condition. Most buttons did not work properly anymore, but I saw another review on Amazon about cleaning the roller. I had no idea this was even possible which means I never actually took the roller apart for years. I did that and cleaned everything. Buttons started to work again !!! Like the DPI one which was not responding anymore, it now works again. Unless you have the proper tools don't take it apart, you will have a hard time putting the buttons back without damaging something. But the middle button was still double-clicking as well the paste and copy ones which I did not use for the last 2 years anymore for that reason. Buttons seem to give up first but roller click and movement still work. My old device after a proper clean up and taking everything apart will keep going on, but I decided just to buy a newer one...I tried switching to a Kensington trackball, but I just want back my roller mouse back... I purchased this same product and received it a week ago. Installed it today. This is my impression about the RollerMouse Red in 2021. This new device is revision 3. The first model was 1. The only thing that changed hardware wise is the new model now has more DPI options. It has a green LED light that allows to switch between blue slower DPI and green faster DPI. It now can go up to 2800 DPI over the original which only had the blue options. The Amazon description is still for the old one and is listed as 2400 DPI which is wrong. The corners are now black matte instead of the previous black glossy, but now they are also plastic instead of metal. It does not look as premium, but it's probably better to avoid light shining on the back. The new device in general does look like materials are a bit cheaper of the original one. The old device came in a very premium box I still have. The new one came in a cheap trow away box, very ugly for a device priced this much. The old device came with screws to mount it to a desk, 2 short keyboard risers, 2 long keyboard risers and a rubber to hold the roller when boxed plus a rest key removal and other goodies. The new device only came with 2 long keyboard risers, short ones missing, even when the paper in What's in the Box said they are included. I have no idea if this was a mistake but looking at the cheap box its very tight, there is actually no space to hold anything else. No replacement screws or anything else included either. Just the roller mouse, the long keyboard risers and the removal key and the manual and guarantee registration card. This might be a problem if you have a keyboard that needs a different mount. Not a problem in my case as I have the older keyboard risers that came with the first device I purchased. The printed documentation is also now very cheap with no colors as the previous one. Price has not changed over the years. Plastic buttons feel the same and the roller feels the same which so far is a good thing. I cannot remember if this was possible with the old model as I never changed it, but the new documentation has instructions to change the click pressure of the roller. The default seems fine to me but maybe this is s new setting like the new DPI options... Do not install the official drivers or software from Contour's website. They are bad. They have not changed over the years and still bad in 2021 with the same issues. I installed again to test them, and they are still very buggy. This means if you click copy and then paste it lags and takes time to respond. You actually need to wait until it copies or pastes things. And the roller itself just moves VERY awkward and slow. DO NOT install their drivers and software if you are on Windows. Just let Windows detect the device on its own, and it will work perfectly with Windows. OLD REVIEW ***************************************************************************** I wanted to wait at least 3 months or more of daily constant use before rating this. It works. It just works better than I expected. If you are researching this product you may not understand how it works, it surely looks awkward but its amazingly comfortable to use. Its fast, it has several speeds, and the fast setting is really fast, you can go from one point to the other by just rolling the bar slowly, even on multiple monitors which was my biggest concern, but the bar is able to roll fine from one corner to the other without speed issues. Your productivity will triple with this device, since now you are very close to your keyboard and pointer, it allows you to switch from type to move and click and back as fast as just moving one finger down. This is worth every single dollar spend, the quality is great, the features work perfectly and I will surely never go back to any mouse, trackball, touch-pad or any other type of input device after using this mouse. Please, just do yourself some good and buy it today. You are going to make an investment for your health and your productivity since this is one of the best computer input devices made so far. I absolutely love it. It should be a norm for companies to implement them for their employees, not just because of health but productivity as well, you are so much faster while doing your job that it will boost productivity big time. ***************************************************************************** UPDATE: December 1, 2015: 2 years later I still love it. Believe it or not, the pain I had in my right hand is a thing of the past. This is no marketing gimmick people. I really don't experience any wrist and finger pain anymore. I yet have to find something similar for my back (a decent chair). But after trying all possible mouses, trackballs for years, my quest is over. This works. Pain is gone. Productivity is increased. This just makes so much sense for someone using mostly a keyboard. I also use this now on 4 monitors, I had that concern before purchase as opposed to more gaming or professional mouses. No problems. Even in the middle default speed, I can travel trough all monitors without a single issue. Fast and comfortable. Dragging things is a pleasure. When you need to send one Windows App from one monitor to the other, this is never going to be same for you, ever. The only bad thing is that it changes your computer habits, you get so spoiled you are never going to use another mouse again. I can't work in anything anymore, not a phone or tablet, I just need to turn back to my computer because there is nothing like this mouse. Clicking things, and moving your cursor comes natural and you don't have to take away your hand from the keyboard which means you will now use keyboard shortcuts for everything, something most people don't because taking your hand away from your mouse and then back is not a natural movement. If you are a power user, working for hours and hours a day in your computer. Purchase this. Combine this with a proper keyboard like Das Keyboard and you have a lethal combination. Roller Mouse + Das Keyboard and you will type at light speeds and be able to click and move your cursor at such amazing speeds that people are going to be shocked when they see you working. In terms of quality I can say I didn't had a single problem. I spelled things over, it has dirt in the bar, and it still looking almost like new. It could use some cleaning but hardware wise, its still working perfectly. This is not a cheap device but its worth every penny if its going to last a few years. Companies should get them for their workers. It will increase their productiviy and make their jobs so much easier.

So far I really like this. I'm actually going to declare it as a life changing item! I'm a lawyer and in my typical work day I can spend five or six hours+ using a mouse to scroll through webpages and documents and filling out forms and revising word documents. I'm having some real problems with my right hand and wrist. I tried several other ergonomic mice and this is by far the best one so far. Probably the biggest immediate benefit is that this thing makes it really easy to switch between using both hands to scroll through documents and webpages. Right off the bat this thing reduced the load off my right hand and arm by at least 50% because I can now easily switch between right and left hands. This helps my work greatly but it also is really nice when I'm eating barbecue potato chips with my right hand and trying to read websites during lunch :-). The scroll wheel is intuitive and works great. Yes it can handle the full width of at least two monitors. The double click button is a nice feature as are the cut-and-paste buttons. Ergonomics are better than a traditional mouse. I still have a mouse next to my keyboard but I'm using it only minimally. For me it was definitely worth the cost. For casual home use, you really have to evaluate whether you actually need this level of ergonomic help. But if you use a computer for work and it and involves a lot of mouse work, this definitely can improve your workday dramatically.

Update ** 5/25/2024 ** I decided to give up on this mouse. I'm moving the rating from two to one star. The issue is simple: they do not control the position, and their solution is to let the cursor drift to the side. It is frustrating and annoying and won't let you work precisely. I tried all combinations using their software/driver, but it only worsened. During my ownership, I tried to contact the company several times. Only once did they talk to me, and they didn't provide a solution—only a workaround. Do not put your windows too close to the border. What about a 300 USD mouse that you have to change so the mouse can work? No thanks. Recently, I called them several times, but the automatic message said they were too busy to take any calls! I opened tickets as well, and there was no response. Beware of the company trying to kill a good product with terrible software and customer service. ============================================================ I bought it recently, less than a week ago. I am impressed that worked out of the box in Windows and Linux. The construction is top-notch; no complaints there. It took me a day to get used to it. It is easy to use in Linux than in Windows. I am using Fedora 35 and Windows 10. The big issue is with border detection. The bar that moves the cursor from left to right works only on one screen. If you have multiple display setups, the cursor has to jump to the other one, but there is no more bar. So, the cursor jumps completely to the other side of the new screen. Let's say you are working with 2 screens. You are on the second screen (the right one) and want to move and work on the left one (the first one). You move the bar to the left, approaching the border, and the cursor jumps to the left screen and goes to the leftmost border of the screen one. So, when you move the cursor where you want to go, the bar is completely to the left, and it is set to work for the left screen. The problem is that is not consistent and accurate. The border detection is the weakest link in the rollermouse. Sometimes, it is very close to the border in between the screens and works fine. Sometimes, it is off for a lot, and maybe you are 2 inches (almost 50 mm) from the border (middle), and it jumps to the left screen. You have to move back to the right screen, and this happens often, so it looks like you are playing ping pong from left to right. They could do something like with Wacom when you set the drawing where you mark it in the setup. One suggestion. DO NOT DOWNLOAD THE DRIVER FROM COUNTOUR DESIGN." It makes it harder to control the "ping pong" thing. In Linux with Wayland, it is not as sensitive as in Windows, so the "ping-pong" game you play is less frequent. One workaround is to keep your work far from the middle border between the screens or buy one expensive 49" screen so you don't have 2 screens. :-) I tried submitting a case to their support, but I never got a response. I called, and the guy told me he was helping four other people, so he didn't have time to help me. A good product, but the company does not stay behind the product helping customers. It is not a good sign if they have a single support customer for all the items they sell. Stay away! There must be another option