2 Pcs Powerful Red LED Flashlight, Adjustable Focus, Durable, Long Range Red Hunting Light Torch, Zoombale, Waterproof, Best for Astronomy, Aviation, Night Observation

These are great red LED flashlights, perfect for walking around at night at star parties or when setting up or tearing down your telescope and other astronomy equipment. I really like that you can focus or expand the area being illuminated. However, these are BRIGHT! Be careful where you shine these at night. You will ruin someone's dark adapted vision if you shine this light up at them. I keep it in the most narrow focused position and zoom out if needed. If you are looking to use this light to read star atlases, look elsewhere - this light is too bright and you will lose your dark adapted vision.

Good so far, really bright. I use it for fishing at night.

Really bright. I learned in the Army that red light does not screw up your night vision. These flashlights are really bright. I put 3 triple A batteries in one and a rechargeable 18650 in the other. Not much difference in brightness. Thse will be an important part of my home security collection. Might buy 2 more for our cars.

I would like to say that from my time in using it, it worked quite well and I am pleased with the purchase. Although it did have some issues due to the light being too bright. A lot of the time that won't be an issue depending on what you're using it for, but animals were able to notice it quite easily during a nature walk.

Pretty good light beam which is easily adjusted for near or far. This was bought to look at turtles trying to nest on beaches of florida. Turtle season you are required to only use red lights on beach at night which does not disturb the turtles laying eggs. Perfect light for watching turtles if that's what your looking for.