The Supernova E-Bike headlight E3 V521 is based on the popular housing model of the V6s from Supernova. However, the E3 V521 E-Bike headlight offers a distinct advantage with its completely newly developed electronics, which can now handle voltages up to 21 volts. Noteworthy is the "Instant Start" feature, which allows the headlight to be used with systems that are sensitive to inrush currents. As a result, the lifespan and brightness endurance of the LED are significantly extended. **Other features of the Supernova E-Bike headlight E3 V521 include:** - Supply voltage: 5 -21 V - 235 lm - Lens type: Terraflux 3 - Soft start, thus compatible with BROSE, Alber, Bosch, etc. - Optimized for permanent daytime running lights - Cable length to the battery: 1080 mm - No rear light cable, switch-free **Included in the package:** - 1 x Supernova E-Bike headlight E3 V521 including MultiMount bracket for fork mounting - 1 x Supernova Power Connector cable Bosch