The AMPP200 & ViZ100 set provides superior night visibility with a 200 lumen LED headlight, plus safety during the day with a 100 lumen ViZ100 and the power of Daytime Hyperflash mode. Both lights are USB rechargeable, and feature OptiCube™ lens technology for a wide beam. The convenient rubber strap quickly and securely attaches the lights to your handlebar. Ride with confidence, day or night.