Highly advanced StVZO certified e-bike cycling headlight. This light is housed in a beautifully machined aluminum body with computerized thermal management to maximize lumen output efficiency. Cutting-edge programming gives this light an innovative high beam/low beam system controlled by a remote switch that lets the user easily toggle between two modes500 lumens or 800 lumenson-the-go via a handlebar mounted button. It comes with an integrated 130 cm (51. 2 inches) cable that connects to the e-bikes motor/battery system. Two mounting options are also includedone Composite Matrix front mount and one machined aluminum fork mount. Compatibility: 11 15v input, 7. 5w LB / 13w HB.