Review on Tactical Red LED Flashlight Single Mode Zoomable Waterproof Hunting Handheld Flashlight For Astronomy Night Observation by Nathan Hutchinson

Bought one, along with a green one, to strap to the front of my canoe to act as nav lights. They get some splashing, but never submerged. Green one worked, and continues to work (a month later) just fine. The red one started turning off and on and flickering the second time I used it. Tried changing the batteries, opening it up in case it had gotten some water inside (it hadn't), still kept flickering. So I returned it for a replacement (Revain does have the best return system!), got the replacement, it started flickering right away too. So I returned it for a refund this time, and bought a different brand. It goes off and on too.What do they have in common? Guess where they are made? It's hard to find one made in USA. Funny that it's the red one that doesn't work, though; you'd think China would be experts in red. Anyway, have decided to buy a regular light and a red sharpie to color in the lens and see if that works better.