BYB 1200 Lumens LED Bike Light Set, Easy to Mount in Front and Back, All Around Headlamp Rechargeable, 4 Modes Design(High, Middle, Low and strobe) Bike like, Headlight and Helmet light 3 in 1, the lighting with 360 Degree full Rotation Powered by 2 x 2200mA rechargeable battery, IPX-6 water resistant, No installation tool needed Small in size but big on practical performance, highly focused beam of light With High, Medium, Low and Flashing 4 mode of lighting, Brightness and Advanced LED efficiency. 100 Perfect satisfaction, 30 day money back guaranteed