I opened the package and confirmed that it works, but I haven't used it. I bought it, but I don't have much time to use it, so I'd like to pass it on to someone who will. It's a facial device with hot and cold functions, and it has 3 levels of adjustment. - Product Name: MEGA BEAUTY - Included: Charging cable - Functions: Hot and cold function, 3 levels of adjustment - Operation buttons: Power button, temperature adjustment, level adjustment button Thank you for looking.