DualCut technology: Sharp, self-sharpening blades that last long and cut hair at double the speed without pulling or irritating the skin. Complete length control: A smart rotating dial gives you multiple options to adjust the length (from 0.5mm to 23mm) to precisely suit your hair or beard style. Freedom of movement: Comfortable cordless design provides 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. The device is used and clean.