Description : SMART TOOTHBRUSH - Beauty, brains and power. 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 , lithium-ion battery, ultra-fast wireless charging, 4 mode operation, smart vibration timers,  engineered brush heads and bristles,  waterproof design. GO BEYONG JUST CLEANING -  removes 10x more plaque along the gum line than a manual toothbrush and 3x more plaque than legacy outdated electric toothbrushes. Whitening mode helps whiten teeth by using inverted frequencies to dissolve surface stains. Massage mode goes beyond teeth to improve gum health by delivering soothing micro-bursts into tissue to improve circulation and overall health. MODERN TECH FOR A HEALTY SMILE - Black Series brings toothbrushes into modern times with its built in enhanced features. A lithium-ion battery, ultra fast wireless charging (forget outdated USB charging), 4 distinct brushing modes and a smart vibrating notification timer are some of the enhanced features built in to the sleek and ergonomic waterproof black satin handle Brand Name: STEVVEX Gadgets Model Number: ST16GG7391AS Commodity Quality Certification: 3C Commodity Quality Certification: ce Commodity Quality Certification: UL Size: 21*2.4*2.4cm Material: ABS Item Type: Electric Toothbrush Quantity: 1 x Toothbrush (Main Body), 4 x Brush Head, 1 x USB Charger Age Group: Adults Type: Acoustic Wave Item Type: Rechargeable tooth brushes Colors: White/Black/Pink/Blue Mode: 5 mode(white/plish/white/gumcare/sensitve) Power: 31000time/min~41000time/min Charge: USB charge(The red light is on when charging) Feature1: Sonic Electric Toothbrush Feature2: Electric Toothbrush USB