This is a junk item. It seems to power on and charge, but it doesn't vibrate. I will sell it to someone who can repair it. Thank you. WATER STONE handheld massager with a digital display. Various massages are possible with multiple massage heads. - Brand: WATER STONE - Display: Digital display (99 display) - Accessories: Massage heads (multiple) - Charging port: USB charging port - Operation button: Power button Thank you for looking.