This electric oral cleaning instrument has high-frequency vibration, quiet operation and strong cleaning ability, which is very suitable for household professional tooth cleaning. Features: 1. High quality: Both the flat head and the hook-shaped cleaning head are made of surgical stainless steel, with exclusive customized abrasive materials that are suitable for removing dental stains and tartar. 2. Strong mode: strong vibration ability, can handle stubborn stone; normal mode: moderate vibration to cope with ordinary tartar; weak mode: small vibration, suitable for polishing 3. Ergonomic design: The silicone material handle is sewn with ergonomic design for a comfortable grip. 4. Easy operation: The operation switch buttons of the dental scaler are all integrated on the handle, which is easy to operate and use. 5. Switch button display: There is also a power switch button display on the handle, flash when charging, full of long light. Specifications: Material: Silicone + Plastic Applicable people: Adult Rated voltage: 3.7V Power: 1W Battery capacity: 400mAh Charging time: about 2 hours Running time: 200 minutes Gear position: 3 gears Size: 226.5*29.5*26.5mm. Package Included: 1 * Electric dental scaler (lithium battery included), 1 * Dental mirror, 4 * Head accessories, 1 * USB charging cable, 1 pc * Packing box, 1 pc * Manual.