massage gun can help the user relieve muscle stiffness and soreness, increase blood pressure, improve the overall health of the body's soft tissues, moreover, it can prevent fascitis which is a kind of painful and difficult. Specifications: Massager Size: 25.8*17.2*7cm (10.16*6.75*2.75 inches ) Charging voltage：110-220 Charging time: 2-3 Hours Working time:4-6 Hours Battery capacity：2600 mAh Unit weight: 1.9kg (4.18 lbs) 20 Speeds:1800 to 3500 percussions per minute Package Included: 1x massage gun 8* massage head 1x power charger 1x user manual 1x Portable case 8 Different Shaped Massage Heads Hocety massager is equipped with 8 different shaped massage heads to help the user to relax different body parts. U-Head - Relax and shape all muscle parts. Cylindrical Head - Deep tissue such as joints, palms and plantar. Flat Head - Neck, spine and achilles tendon. Spherical Head - Arm, waist, hip, thigh, calf and other big muscle groups. The user can change the massage guns speed as needed. 1800 to 3500 percussions per minute. How to Enjoy Charge up your gun and prepare to unwind. Select and install your preferred massage head. Adjust frequency anywhere from gentle to intense. Apply targeted percussion to any muscle, any time!