MicroPulse Bristles Help Clean Between Teeth High speed oscillating rotating motion to clean better than a manual toothbrush. Head: Surround each tooth for cleaner teeth and healthier gums. Extra Refill Removes more plaque than an ordinary manual toothbrush. MicroPulse bristles clean deep between teeth. 2 minute timer. Includes: 1 Handle, 2 Relacement Heads,1 Charger Please Note: This item has been built to U.S. electronics specifications and may need additional modifications or converters to be used in countries other than the U.S. and Canada.