Three trees Diving Flashlight,3W 110 Lumens Super white LED Submarine Light Safety Waterroof Underwater For Scuba Outdoor Sports Rechargeable Bright LED Diving Torch Light（BATTERY NOT INCLUDE)

This light did not even work out of the package, so didn't get a chance to test it underwater. I needed a backup dive light for an upcoming scuba trip and figured this would be a cheap option... By the time you buy this light + the required AA batteries you might as well get a more expensive ~$30 rechargeable dive light. I didn't get a chance to take this on a dive but from looking at the SINGLE o-ring seal I suspect it would have failed.

Bought for my kid to play with in the pool and bathtub. It has shorted out somehow and it wouldn't come on for a while. Now it has been stuck on a really dim light for weeks. We've tried replacing the batteries but it will still not get any brighter and will not turn off (unless batteries are removed). I hate that I missed the return window. Waste of money.