DualCut technology: Sharp, self-sharpening blades that last long and cut hair at double speed without pulling or irritating the skin. Full length control: A smart rotating dial gives you multiple options to adjust the length (from 0.5 mm to 23 mm) to precisely suit your hair or beard style. Freedom of movement: A comfortable cordless design gives you flexible use and complete freedom of movement while shaving, with a smart LED indicator to monitor battery status. Easy to clean: A detachable head that opens with one click to wash and clean the blades under running water in seconds.