AquaSonic Black Series Ultra Whitening Toothbrush – ADA Accepted Rechargeable Toothbrush - 8 Brush Heads & Travel Case - Ultra Sonic Motor & Wireless Charging - 4 Modes w Smart Timer - Sonic ElectricFeatures The Black Series is a world class modern electric toothbrush packed with the most up to date technology. It features an ultra powerful and industry leading motor producing 40,000 vibrations per minute, a lithium ion battery, ultra fast wireless charging, 4 mode operation, smart vibration timers, 8 DuPont engineered brush heads, and a custom travel case; all with a sleek ultra slim, lightweight and IPX7 rated waterproof design. Accepted by the