Handheld Massager with Heat Neck Shoulder Back Massager Back Massager Heat Function ✓✓✓Charger/adapter Voltage: AC 220-240V 50/60Hz Input: DC12V 2AVoltage: AC 110-240V & Car AdapterTechnical PercussionTissue Kneading Shiatsu & VibrationWorking Time Auto Timer: 20 minutes Auto Timer: 15 minutesAuto Timer: 15 minutes Massage Part Neck, Shoulder, Arm, Back, Leg, Calf, Foot Neck, Shoulder, Back, Waist, Leg, Calf, Foot, Arm, Full Body Back(Lower/Upper/Full), Lumbar, Shoulder, Hip