Electric Cordless Neck Massagers with Heat for Pain Relief Health Care 4 Modes 9 Levels Massagers deep Tissue Pulse Muscle Massagers Features: 1. +EMS double pulse technology, deeply Massagers the muscles, relax the cervical spine, relieve neck fatigue, and effectively improve various neck problems such as shoulder and neck strain, pain, soreness, stiffness and discomfort. 2. Three-level constant temperature hot compress (42/47/52) can effectively promote blood circulation, unclog blood vessels, relieve neck pain, and relieve cervical spine pressure. 3. 4 Massagers modes, 9 adjustable inity, you can ly adjust according to your personal tolerance and preferences. 4. Small and light body, pendant-style innovative design, comfortable to wear, easy to carry, enjoy comfortable Massagers anytime, anywhere. 5. The ergonomically designed electrode pads conform 270 to the curves of various parts of the body, such as legs, arms, shoulders and neck. Specifications: Material: ABS Color: silver Weight: 0.22kg Packing size: 19.2*14*4cm Rated voltage (V): 5v/1A Net state current: below 1uA Rated power (W): 5W Battery capacity: 550Ah Packing List: 1* Neck Massagers 1* USB Charging Cable 1* English User Manual