ATTENTION PLEASE: The four massage heads may be slightly different from those shown in the effect picture, including U-head * 1, ball head * 1, cylinder head * 1, flat head * 1 1. 4-6 hours excellent endurance: 7.4V smart battery management system uses 7.4V 2000MAH power battery, Can be used for 4-7 hours in 3.5 hours of charging each time. 2.Intelligent technology is light and low noise,the massager operates under 45dB: multi-acoustic materials absorb vibration aerodynamic noise reduction, with brushless motor double bearing rotating structure, blooming strong power, while significantly reducing noise. 3. High qualty aponeurosis gun: mallet relieves fatigue after exercise, unblocked meridians and alleviates muscle stiffness and soreness. 4. Compact body, even girls can use it with one hand, light and flexible. Suitable Group: If you need a very deep massage this is the product for you. If your work in construction, nursing, sports, crossfit etc or work to make any kind of lifting effort or physically, you need it If you work hard you probably have back pain and often the regular massage and just no more hand massagers get then we recommend this deep massage enough for you, Let your body-building work half the effort to release fatigue, relieve pain, so that your fitness effect is more remarkable. Specifications: Item Type:Massage & Relaxation Technology:Percussive Massage Type:Muscle Massager Function:Cause Resonance of Skeletal Muscle Application:Body Speed Regulation:30 Gear Control Material:ABS Frequency:3200r/min Place of Origin:China Stroke:6.5mm Massage Heads:4 Heads Power:Rechargeable Li-on Battery Power Charger:Type_C Battery Capacity:2000mAh Battery Rated Voltage:DC 7.4V Working Hour:4-7 Hours Massager Net Weight:360g Charge Time:3.5 Hours Product Size:115*144*40mm Color:Pink,Black,White Package Size:240*185*60mmmay have some difference Package Included: Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin