Multifunction facial device, with selectable modes for easy use. - Model Name: Cell Cure 4t - Power Source: AC adapter - Operation Buttons: Mode/Start/Stop button - Color: White - Accessories: AC adapter The power turns on, but sometimes the sound is strange, although it can be used without problems. There is a tingling sensation. Your skin will become smooth and radiant. For those who understand that this is a used item. Returns are not accepted.