USB Electric Toothbrush with 4 Replacement Heads

This sonic toothbrush designed to gently cleanse the teeth and massage the gums features a convenient USB-powered charging dock. Features: Designed to gently cleanse the teeth without damaging enamel Features replaceable brush heads with medium-soft nylon bristles Tooth-waved brush profile helps clean hard-to-reach areas Ergonomic grip helps provide comfortable use Smart timer function (2 minutes; 30 seconds per quadrant) Bristle width: 6mm Up to 31000 strokes per minute Maximum Power: 3W Waterproof rating: IPX7 Operation battery time: up to 25 days Charging time: 16 hours Working voltage: 3.7V DC Capacity: 700mAh Dimensions: 7.5” x 1.1” x 1.1” 5 Cleansing Modes: Whitening: designed to remove surface stains Clean: extra-gentle mode for sensitive teeth and gums Polish: 2-minute quick-brush mode aims to brighten and polish Massage: gently stimulates the gums (great for people with sensitive gums) Study: weak to strong bristle vibration strength (helps ease into using the sonic toothbrush)