This is an oral care device from PBM Healing. It's recommended for those who want to speed up their clear aligner treatment or are experiencing pain. Regarding the accessories, the plug and cable are missing, so they are not the original ones. The user is a woman in her 20s. It has been disinfected, but please refrain from purchasing if you are concerned. As shown in photo ④, it can be used without any problems after charging, but only the USB port on the left side could be used... (There are two USB ports on the top of the main unit.) 【Model Information】 - Brand: PBM Healing - Model: OE-01 - Accessories: Charger, USB cable, Mouthpiece - Serial Number: S21809 - Function: Mouthpiece with LED light