1-level battery indicator Use the intuitive indicator to see when the shaver battery is low, empty or fully charged. 40 minutes of cordless shaving Shave cordlessly for up to 40 minutes after a 10-hour charge. The shaver only operates when not charging. Skin Protection System Designed to prevent nicks and cuts for a clean and protective shave. The Skin Protection System glides smoothly across your skin with its rounded head profile, while keeping your skin protected. 27 self-sharpening blades Get a consistently clean shave every time with 27 self-sharpening precision-engineered blades.