Description: Smart Sensor Bike Light: Bulit-in smart sensor of the bike headlight which can adjust brightness based on lingt environment automatically to ensure maximum safety for you when going out for the night rides. USB Rechargeable: Built-in 2200mAh usb rechargeable battery. Powerful run time of up to 10 hours on low modes. No more waste your money on batteries ever again. Three Light Mode Options: 3 different modes include High,Low, Flash, easy to switch according to different road conditions during your daily rides. Professional T6 lamp beads adopt advanced technology produces bright light, with side light warning which making your bike stand out. Waterproof and Impact Resistant: With IPX5 waterproof, the bike lights set will keep you safe and illuminate your path. Whether in heavy rain or fog, its waterproof, impact resistance and durability can withstand. Easy to Install: Both the front bike light and tail light are attached with a mount bracket that allows you to easily install and detach them in seconds with no other tools required. Specification: Name: USB Smart Sensor Front Light Size: 105x88x41mm/4.13x3.46x1.6inch Material: ABS environmental protection material Charging: USB charging/2200MAH Battery mode: 1 high light/ 2 low light/ 3 flashing/ 4 induction Light: T6 lamp beads Light weight: 135g Package Includes: 1 Piece Headlight 1 Piece Mount 1 Piece Tail Light 1 Piece USB Cable