Review on Wsky S1800 LED Tactical Flashlight - Waterproof And Powerful - High Lumen, Zoomable, 5 Modes - Perfect For Camping, Biking, And Home Emergency (Batteries Not Included) by Kevin Silver

These flashlights are really bright, but not waterproof. I exposed one to light water when cleaning out my shower drain and then a 2 second rince under the faucet. It had water inside of it afterward. I thought there was just a drop on the lense. I opened it up after it sat for a day and found water in the battery compartment and a battery had started to corrode. I'll have to look for a different one since the only reason I bought these were because they were waterproof.