Description: High frequency vibration effectively separates plaque,calculus,and stains,removes hard easily from the teeth,from even the hardest to reach areas,and prevents gum and tooth problems. Comes with a LED screen,auxiliary LED light and a silicone handle,lightweight body,comfortable to hold and easy to use. layout effectively avoiding misoperation. IPX6 level waterproof,to use. High-quality stainless steel head completely removes plaque,and food residues in the oral cavity. for Built-in 250mAh rechargeable battery provides a battery life,it automatically outage after fully charged with USB,auto-protective and energy saving. It has a smart memory function,which automatically selects the last shutdown when it is opened. It also has 3 heads to choose from depending on needs. Specification: Colour: Black Size: 24.5x8.6x2.5cm Material: ABS Weight: 175g Model Number: 104146 Charging Interface: DC seat charging Battery Capacity: 250mAh Charging Voltage: 5V/iA Working Voltage: 3.7V Waterproof Rating: IPX6 Package Includes: 1 x Device Body 1 x Needle-Like Cleaning Head 1 x Hook-Like Cleaning Head 1 1 x Probe 1 x DC Charging Cable 1 x User Manual : Please allow slightly 0-1cm difference due to manual measurement. Colors can appear different depending on light and how the listing is viewed. Thanks for your understanding and attention. Wish you a pleasant shopping experience