CelestronNature 10x25 Monocular – Ideal for Hiking and Wildlife Viewing – Multi-Coated Optics – 25mm Objective Lens – BaK-4 Prism –Twist-Up Eyecup – Waterproof & Fogproof

As an amateur astronomer, I was well-acquainted with Celestron's reputation for quality telescopes, and so I was drawn to Celestron when looking for a more portable and waterproof alternative to my excellent (but heavy and unwieldy) 10x50 binoculars. So far, the Celestron monocular has proven an excellent choice. The optics are very good, and while other reviewers are correct about the stiffness of the focusing ring, I consider that to be an asset, because it allows for very fine focusing of the image -- and once focused, it stays focused until you change it! The monocular is very lightweight and hangs so comfortably around my neck that I have to check to see if it is still there! The carrying case comes with a snap to attach it to a belt, but this snap has let go a number of times during hiking, allowing the entire case and monocular to drop to the ground. For this reason I no longer use the case, and put the device in a pocket or hang it around my neck. The 10x lens is probably the maximum allowable for hand-held use, as any shaking of the unit is immediately visible through the lens. Other reviewers have cited this as a negative, but to me, if you want 10x magnification, you better expect to hold it steady! If you know this to be an issue for you, perhaps a 7x or 8x monocular would be a better choice. In conclusion, I have been very satisfied with this monocular and am looking forward to bringing it on paddling trips and on the motor scooter, where its portability will ensure it gets used -- as opposed to the bulky binoculars, which sit in their case in the closet!

I wanted a decent monocular, that was easy to carry with good optics. I can't afford a Zeiss or a Leica, but I have had experience with Celestron so I figured what the heck.I was not disappointed. The optics are clear, the image is bright. Great for use during daylight hours, or early evening just after sunset. I have not had a chance to try star gazing with it yet, but I suspect it would be mediocre at best. Not because the optics are poor, but because the 25mm objective lens is just too small for that use.The build quality is what I expect from Celestron. Its well made. The rubber armor is easy to hold on too. and the size/weight is good.So on to the Pro's and Con's...Pro's:Good optics, bright and clear, no blurring of the image at the edges of the view.Well made, nothing rattles or shakesThe rubber armor is nice and make for a good gripFairly easy to get a good sharp focus.I like the twisting eye piece, because I wear glasses.The eye relief is very good. Even with my glasses on, I can still see the whole view. (if that makes sense)Came with a rather nice lanyardThe case is sufficient.Size wise, it fits my hand very well, and is not heavy.Con's:The focus ring is very stiff, which is not a real negative, its just something I noticed. It may improve with time.The finger bumps on the top, specifically the one nearest the objective lens are just a bit much. Again personal taste.The lanyard hole on the bottom is too near the focus ring and interferes with turning the focus ring from the bottom of the unit. And that's why the unit only got a 4 rather than a 5. The place where you attach the lanyard really annoys me.I wish it had come with lens caps.OK I know most of those Con's are a personal taste thing. and don't really effect the performance.I have not had a chance to test the water or fog proof-ness of it yet, but as long as you don't try diving with it, it should be just fine.The 10x power is what i was looking for, but please remember that the higher power, the harder it will be to hold the image still with out a tripod or mono pod.Really though, if you are looking for a good monocular for daytime use, with good optics, you can't go wrong with the Celestron Nature 10x25.I do recommend it and would purchase another one should anything happen to this one.

Gives a very clear image. I use it a sporting events.

This Celestron monocular is great for the backpacker, expedition kayaker or all-around nature watcher. Its small, compact size does not at all limit the features of this product. I have mine lashed to my PFD and use it nealy every time I go expedition kayaking. A few points: Its rugged - This optic is very sturdy and its rubberized housing can take bumps and drops. It's water proof & fog proof - No need to fuss if it rains or you take the occassional splash or a solid dunking. Sharp, clear, & fine-tuned focusing - This thing can zoom into the opposite shore or our local river (1 mile) and gives enough clarity to make out points of interest, birds, you name it. Overall: perfect for the job!

Really great product for the price. Great quality, extremely portable, and very clear, even with low light.I give it a four star because I can only see clearly at about 110 yards maybe and I was under the impression I could see clearly at atleast 150 yards.It could be me though. I was looking at a truck around 100 yards away and could not read the large magnet on the side. With that being said, I couldn't tell the truck had the magnet advertisement with my naked eye.Hope this review helps.UPDATE: dropped it to 3 stars because when I bought my last one, it was under $30. At $45 in 2022, don’t think it is worth it.