USB rechargeable LED bicycle rear light laser bicycle rear light cycling Features: Working hours: With Leser and LED function working together, constant light for about 2.5 hours, quick flash 5 hours, slow flash,7 hours. With a quick release silicone strap, fits for most bike handlebars, easy to install and remove without any tool. IP55 Waterproof rate can fit for different kinds of environment, no worry about rainy days, lengthen it’s working life. USB rechargeable  can be convenient and more environment friendly. LD & Leser Function, with cool laser line, makes you and your bicycle be protected in the center of the leser line. With leser line and leser point function, can use as a leser pen, play with your pets! Descriptions: Material: High quality ABS LED: 5 pieces LEDs LD: 1 piece LD (leser) Brightness: 150 lumens Waterproof: IP55 waterproof rate Product size: 95*28*23mm Battery: 3.7V 500mAh Li battery Package include: 1/2 * LED & Leser Bicycle light 1/2 * Silicone bracket 1/2 * USB Cable