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 Chad Moser

SIGEM headlight only worked the first 3 times. After that, the red light on the power button started flashing, and the headlight stopped shining brightly. So I charged the headlight and when I unplugged the headlight after about 5 hours the red light was still flashing and the light was still not that bright. Then I decided to charge it again and turn on the light while it was on connected to the charger and it worked as expected, but as soon as I unplugged it the brightness decreased and the red light started blinking again. Now the light doesn't work at all. I want to return this item. For me this is not a good buy.