CatEye AMPP 400S Headlight. The CatEye AMPP400S model features USB-C recharging five modes including a new low mode offering 8 hours at 100 lumens and enhanced operability with a larger button. It has a maximum output of 400 lumens with a 60-hour runtime controlled lumens and a sleek durable design. The device turns onto high mode with a double click and provides excellent side visibility. Additional features include a low battery indicator turning red at less than 20% and the FlexTight (H-34N) mount.Max 400lm output and 60hr runtimeControlled lumens durable sleek designTurns onto High mode with double clickLow battery indicator