Overview: 1. Through reduced cycle pulse technology, it penetrates 3-5 centimeters under the skin to open pain points and meridians and alleviate cervical spine pain. 2. Constant temperature massage. A hot compress at 42℃ can relax blood vessels, relax muscles and bones, accelerate blood circulation, and relieve cervical pain. 3. 3 massage modes and 15-step strength adjustment. Acupuncture and moxibustion mode, massage mode and tapping mode. 4. Shutdown at regular intervals. Default, 15 minutes after a power failure automatically, safer and more guaranteed. 5. USB charging. 1600mAh battery, charged for 2 hours, massaged for 15 minutes every day, lasted about 1 month.