German StVZO optimized lens with approved flood and long-range beam. High performance always-on LED delivers 310 lumens (115 Lux). Durable, heat-dissipating CNC machined aluminum construction. Auto day/night system extends battery runtime. E-bike compatible 6 – 12v input, 6w easily plugs into batteries from top makers including Bosch, Shimano and Yamaha. Includes X-Lock stem mount and CNC-machined aluminum fork mount. 130cm power cable included. Lezyne 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.