I purchased this but barely used it, so it's been stored away. I have confirmed that it works, but since it is a used item, I will sell it to someone who understands this. Bluetooth eye esthe massager, MT-IRM21, with instruction manual included. Warranty has expired. - Model Name: MT-IRM21 - Bluetooth Function: Yes - Instruction Manual: Included - Customer Support Phone Number: 092-260-7366 - Warranty Period: 6 months from the date of purchase - Purchase Date: July 2023 Thank you for looking.