Size:43*45mm,1*red+1*white USB RECHARGEABLE BIKE LIGHT SET The bicycle front lights with built-in rechargeable lithium battery can be easily charged by standard USB cable. No need to waste your time and money on replacing the batteries. MULTIPURPOSE This bike light can be widely used when you are cycling, running, jogging, hiking, camping, or walking your dog. Small size and lightweight features offer an easy way to carry and store. Perfect bike accessories and best choice for night work or outdoor camping activities. It can also be used as an emergency flashlight. HIGH STANDARD WATERPROOF & 360 DEGREE SWIVEL This mountain bike light set features with high standard waterproof that can enable a free ride even in heavy rain day. Ultra bright bicycle headlight also can be swiveled 360 degrees smoothly. MODE HEADLIGHT & MODE REAR LIGHT This bike light kit has multiple light mode can be adjusted according to your demands. Full Brightness/ Half Brightness/ Fast Flashing/ Slow Flashing. Easy-switch mechanism offer an easy way to select alternative modes. Just press the button and enjoy a safe ride. LIGHT WEIGHTED & WATER RESISTANTMade of premium aluminium alloy and ABS, plus switch button and USB port covered with watertight silicone, this bike light is IPX-4 waterproof and durable, ensuring normal use in raining, foggy days and all kinds of severe weather. Perfect for daily riding, road cycling, mountain biking, emergencies, etc.Products from NIUNIU's store