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.