Deep Tissue Massage Gun Relax Muscle Sport Machine Body Massager Vibration Massage Gun Percussion Features, Including 4 Different Massage Head, Meeting Various Demand , Effectively Reduce Muscle Stiffness, Sore Pain, Increasing Blood Circulation, Multi-Speed Adjustment, You Can Choose That You Fit, 2000 Mah Large Capacity Lithium Battery, From 2 To 3 Hours Stand By, Suitable For Recovery After Sports Fatigue, Rehabilitation After Sports Injury, Pain Relief During The Convalescence Period Of Surgery, As Well As Reducing Inflammatory Reaction, Specifications Power Charger, Rated Input 100 240V 50/60Hz Battery, Rated Voltage 8.4V Dc, Type Li-Ion, Capacity 2000 Mah, Working Hour From 2 To 3 Hours, Speed 1200-3200R/Min And Package Included 1 X Massage Gun 4 X Massage Heads 1 X Adapter.