Lightweight, easy to install, easy to carry, high elastic band is easy to operate, high friction, not afraid of road conditions. The tail light emits an eye catching wide angle beam that can be seen from blocks away, need not worry about being knocked over by others. Feature: 1.ã€EASY TO INSTALLã€?This waterproof bicycle taillight with removable silicone straps can be fixed on the seat tube, handlebars, front and rear forks, helmets, etc. Easy to install and remove. 2.ã€? LIGHTING MODEã€?Switch the lighting mode at will, you can choose one color to be always on or flashing, or two colors to flash alternately. Five Modes of Red and Blue Light 3.ã€IPX5 WATERPROOFã€?IPX5 life waterproof, waterproof material is sealed and waterproof, rainwater is not easy to leakage. Specification: Item Type: Bike Tail Light Material: Plastic+Silicone Strap Color: As Picture Shown Size: Approx. 63x24mm/2.5x0.9in Weight: Approx. 35.0g/1.2oz Light Source: COB Chips Waterproof: IPX5 Battery Capacity: 500mAh Li ion Battery Life Time: 4 6 hours Charging Method: USB Charging Five Modes of Red and Blue Light: Red light is always on Flashing red Blue light is always on Blue light flashing Red and blue flashing alternately Five Modes of Red and White Light: Red light is always on Flashing red White light always on White light flashing Red and white flashing alternately Package List: 1 x Bike Tail Light 1 x Silicone Strap 1 x Buckle 1 x USB Charging Cable