German STVZO optimized lens with approved flood, long-range, high and low beams. High performance, always-on LED, delivers 290 lumens in low beam and 550 lumens in high beam. Durable, heat-dissipating CNC machined aluminium construction with dual LEDs. E-bike compatible 6 - 12V input, 9W easily plugs into batteries from top makers including Bosch, Shimano and Yamaha. Built in USB port can charge external accessories. Includes X-Lock stem mount and CNC-machined aluminium fork mount. 130cm power cable included. These 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 model battery 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.