USB RECHARGEABLE BIKE LIGHTS: Stop wasting your money on batteries again. Lights are usb rechargeable, convenient ensures and longer battery life. Lightweight bicycle lights fit in your pocket or your bag for easy transport.TEMPERATURE CONTROL: The bike light has intelligent temperature control function, when a certain heat is reached, it will automatically reduce the brightness so that the temperature will not be too high to ensure .POWER INDICATOR: Rechargeable bicycle lights with 3-grid power indicator, allows you easily to know the remaining power and ensure timely charging.LIGHT MODE OPTIONS: Strong light - Medium light - Strobe, A simple and easy to use bicycle light. You only need to change the light mode by pressing the power button.EASY TO FIT& LIGHTWEIGHT: The bike light can be easily installed and released without any tools.The light weight and sturdy shell guarantees stable performance, which is very important when you ride on complex terrain.