Power Source: None Electric Material: Other Place of Origin: / Size: 14.5*5.3*2.5 Function: Skin Tightening Function: Skin Rejuvenation Function: Vibration Massage Manufacturing Process: Hand Made Jade Massage Roller: foam massage roller face massage roller: muscle massage roller drop shipping: drop ship Power supply mode: 1 X AA battery (not included) Material: Natural Jade Product size: 140mm / 5.5in