USB Rechargeable Bicycle Rear Light Safety Warning Light Waterproof LED Bicycle Taillight for Night Riding Cycling Equipment Safety Warning Taillight-As a bicycle safety warning light,it is bright, compact, easy to carry, and most importantly, not expensive, very worth buying. Usb Rechargeable And Save Your Money– Never Waste Your Money on Batteries again! Save the Hassle to Replace Batteries Every Week! They charge from your computer or any device with a USB port. Easy To Install And Remove - Leave your screwdrivers in the toolbox, and detaches in under 2 seconds with NO tools required. Can be mounted almost anywhere. Waterproof and Shock Resistant: IPX4 Waterproof grade Suitable for the professional or casual bicycle rider. Specifications: High quality The New Flash Mode Four Kinds Of Flash Modes ,Smooth Design ,Waterproof Seal,Easy To Install,Fits all bicycles. USB Charging sets of lights composition: 5 LED Light color: Red，White， blue Material: Plastic housing Mode: 4 modes Brightness:15 lumens Waterproof:Yes Running time Always light: 4 Hours Strobe: 8 Hours Slow: 10 Hours Fast: 12 Hours Charging time:Approx2 hours Package included: 1 x Light 1 x USB Charging Cable 2 x Rubber Straps