Bright and efficient multi-purpose e-bike cycling light. Durable, heat-dissipating CNC machined aluminum construction. Two ultrahigh-output LEDs deliver up to 500 lumens. Enhanced MOR (Maximum Optical Reflection) lens with built-in side visibility. Intelligent Auto Day/Night dim mode.E-bike lights are powered by the motor of an e-bike and need to be manually installed. Proper installation may require some disassembly of the bike and motor (depending on make and modelbattery type) and additional wiring to connect the light to the motor. Please contact the e-bike or motor manufacturer for installation instructions. It is highly recommended to have a trained e-bike professional install your lights for you.