Scalable Blue LED 3 Mode Long Range Blue Beam Blue Light Flashlight, Blue Flashlight Blue LED Flashlight Torch with Blue Light For Night Fishling, Detecting-Blue House

We took this little inexpensive red flashlight on a "dark skies" trip that involved a lot of nights of stargazing. It was a great purchase. Plenty of light to help see where you're going but zero strain on the eyes. Made stargazing much more enjoyable both for us and for others nearby.

This light may or may not be bright enough for you as it depends on what you are using it for. I use this red flashlight for walking on a trail at night with other people. We use red so as not to kill night vision. With a bright white light, your eye adapts to the lit-up spot where the flashlight hits the ground and then you can't see the dark areas off to the sides. But with a not-overbright red light, you can see all around you. I hold this light about below waist high in my hand aimed so the illuminated spot hits my feet and 6 ro 8 fet in front of me. So the light only has to reach between 2 and 8 feet. With the focus set to "wide" and just an Eneloop 1.2 volt rechargeable AA battery the light is just the right brightness in "high". But with a 3.7-volt battery I need to turn the light to "low" setting.I have not yet tested the burn time with a full battery but after a two-hour hike with white 1.2V 1900 mah battery, the light had not dimmed at all.About the color, the lens is clear and the color is made by the LED itself. I don't know the wavelength but the color is very saturated and seems to be the best shade of red for my purpose, I think they hit the color dead-on.As for build quality. It is better then one would expect for a $9 flashlightThis is NOT the light you want if you want to see 50 yards in the distance at night. but is perfect if you want to avoid stepping in hoes or tripping over rocks while retaining to the ability to see the un-lit surrounding

Useful for astronomy obversations, the red light preserves your night vision.However, 150 yards is a stretch, by quite a bit. Expect more like 150 FEET. Calling the light "tactical" is also more novelty than actual real-world use. Pretty sure it was added to the title to get more clicks.Nonetheless, it works great for my purposes.The version I received has 3 settings, as advertised. Full/Half/Strobe. The strobe seems useless to me and is more annoying to click through than practical. Seems it only adds to the stress on the power button; hopefully manufacturer will drop this useless feature in the future.The zoom is a nice feature that allows you to cast a circle about 6-7 feet wide at 6 feet, or focus to a square of about 6x6" at 6'.Works well with a rechargeable NiMH AA battery.

A little too bright for what I wanted it for. But works well.

I work a weekend job where I have to navigate unlit buildings, and I wanted a green flashlight because that color hurts my eyes the least.Pros: I loved how this one had both the dim and bright modes, and I liked the zoomable light. When it worked, it was just what I needed.Cons: It would constantly switch modes if you bumped or shook it, not just if you clicked the button. After about two weeks, I accidentally dropped it, and it broke immediately. Buy a cheap flashlight, get a cheap flashlight, I guess.

Bought this red flashlight for fishing at night. This is the first red flashlight that is easily bright enough for tying knots with thin tippet (fishing line) and the zoom feature puts the light right where I need it. Best of all, it doesn’t have any other colors so the light is always red and doesn’t spook the fish. Highly recommend this for hunting and fishing.

While the packaging was very minimal, the flashlight itself is functional, compact and works well. I use a AA battery in it. It is bright and the beam can be adjusted from a small square to a broader circle. I am using it to experiment based on the recent findings from the UCL study on the effects on declining eyesight of 3 minutes of daily exposure to 670nm light. I do not use this for night reading or emergency signaling so cannot comment on those functions.

This is one of the brightest blue LED colored flashlights I have ever used or owned. I haven't tried it out as a blood tracking light as of yet so I can't comment on that. What I can say that it is a nice, small size for pocket or purse carry and the zoom from flood to tight beam is very handy. Unlike white LED lights, this one doesn't blind you when you turn it on when you eyes are used to nighttime. For those of you thinking that it is a UV light, you will be disappointed. Those of you looking for a light that won't night blind you or for special effect uses for blue colored light, this is your answer. Since it uses an easy-to-find-anywhere AA battery it is cheap to keep it ready for use. It is also useful for detecting some day glow colored items. The unit itself seems to be well made and reliable. For the price, it will be hard to find a blue LED flashlight that works as well.

Works and still same batteries

Works well

Great!!

Working outside at night this flashlight makes is easy for my driver to locate me in the mist of many yellow or white lights

It's a fine little flashlight, but not what I ordered. Cost of return isn't worth it, though.