Features: 1. This handle of the handheld massager is ergonomically designed for an easy and comfortable grip. The radian curved shape perfectly accommodates the physiological curvature of the human spine, making back massaging easier and more relaxing than ever before. 2. Promote blood circulation, relieve muscle pain, and eliminate inflammation and edema. 3. It can relieve pain in the shoulders, neck, waist, legs, nerves, and muscles. 4.6 kinds of massage heads, 10 kinds of gears, 12 kinds of modes, 720 kinds of massage experiences. 5. With a strong motor, this deep tissue percussion massager with thousands of pulses per minute, penetrates sore & stiff muscles to relieve body pains. Specification: Material: ABS Product Color: Grey, White Battery Capacity: 2000mAh Rated Voltage: 8.4V Supply Voltage: 220V Product Size: 43 x 12cm Product Weight: 850g Optional: Plug In, Rechargeable Package Included: 1 x Handheld Neck Back Massager