Review on SIGEM Bike Light Set: Ultra Bright, USB Rechargeable LED Front Headlight, Rear Taillight, and Helmet Light for Easy Installation. Waterproof Bicycle Head & Tail Lights (3 Pack). by Tony Hanson

When I first received this flashlight (a month ago) and started using it I was very satisfied. The main light is very bright and easy to install. I like the backlight (rectangular). With them I felt completely safe and was visible at night. But then there were problems with the main light. These issues appear to be due to my flashlight being exposed to rain (a decent amount, but not that much). Basically I turned the lights off from time to time but when I got back to my bike later that day the lights were back on for who knows how long. Then recently it got to the point where I hit the power button a few times before the light went out. And now the power button only works about 5% of the time. Twice in a row I just had to turn off the light because I couldn't turn it off. The perfect time to break this flashlight is right after my 30 day money back guarantee has expired. So if you live in a dry area or never bike in the rain, this headlight is *probably* for you. Otherwise I wouldn't have bought it. Luckily there were other headlights I could use but I didn't pay for 2/3 working headlights.