Dental Ultrasonic Plaque/Tartar Scaler & Calculus Stain Remover $ 11.48 Power supply: No. 7 dry battery (need to bring your own) Voltage: 1.5V Number of vibrations: about 12000RPM Material: host ABS, working head environmental protection PP + environmental protection TPE Host size: 158 * 20 * 23mm Color: black, white
