Are you often troubled by these questions? - Muscle soreness after fitness - Muscle strain after high-intensity exercise - Physical and mental exertion after sitting in the office\r\nDon\'t worry, you need a KJLAND deep tissue muscle percussion massage gun to solve all your problems!\r\n【USB charging design】 The percussion massage gun uses a USB interface to charge, and is equipped with two USB cables and an adapter. You can charge anywhere, anytime and anywhere charging brings you great convenience, allowing you to better enjoy the muscle relaxation brought by the massage gun.\r\n【6 adjustable speed】 Multi-frequency vibration design to meet a variety of muscle relaxation needs. 1-2: Muscle Awakening; 3-4: Breaking Lactic Acid; 5-6: Deep Massage.\r\n【Long battery life】 Built-in large capacity 1800MA lithium battery, 180 minutes for one charge, 120 minutes for use.The 10-minute smart shutdown function improves safety during use and also saves battery power.\r\n【Replaceable massage head】 4 replaceable massage heads for easy replacement to meet your needs.U Shape apply to spinal injuries; Conical Shape apply to joints injuries; Mushroom Shape apply to all parts of the body; Round Shape apply to large muscle groups.\r\nParameter: ·Size: 9.25*7.87*2 inch ·Input Voltage: 100-240V ·Battery Capacity: 1800mAh ·Speed: 2100-3600 rev / min ·Rated Power: 24W ·Massager Gun Weight: 1.55 lbs ·Charging time:150 minutes ·Usage Time: 120 minutes ·Stroke Length: 0.31inch (8mm)