Supports orthodontic treatment with a high-frequency vibration device. The vibration helps move the teeth. Purchased as a genuine product at a dental clinic and used only 2 or 3 times. I think it's clean. - Brand: Dentsply Sirona - Model Name: SureSmile VPro - Type: Vibration Device - Contents: SureSmile VPro vibration device - Product Number: VB1803 - LOT Number: 05202025001 Although there is no charger, it can be charged the same way as a mobile phone. Thank you for viewing. Please feel free to ask if you have any questions.