SUPER BRIGHT BIKE TAIL LIGHT: It is equipped with 30 bright LEDs which gives extraordinarily wide-beamed RED light,180 degree visibility, Compact, Slim and Lightweight, it's best choice for the night rider or daylight commuter. 
USB RECHARGEABLE REAR BIKE LIGHT: Powered with a RELIABLE 500 mAh rechargeable lithium battery to support long time lighting with only one single full charge. This bicycle taillight charges on any USB device less than 2 hours, and stays lit 4 to 12 hours safety! 
6 LIGHTING MODES & WATERPROOF: One touch to select different lighting modes and IPX-3 waterproof to keep you safe in every situation with this bicycle taillight. 
UNIVERSAL FIT & EASY TO INSTALL: This bicycle rear light could be mounted anywhere you want in seconds, such as the seat post, helmet, backpack or anywhere on the frame with the included different size rubber straps without requirement of ANY TOOLS!