1. Through low-cycle pulse technology, penetrate 3-5 centimeters below the skin to open the pain points and meridians, and lighten the pain of cervical spine.2. Constant temperature massage. 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 force adjustment. Acupuncture and moxibustion mode, massage mode and knocking mode.4. Shut down at regular intervals. The default 15 minutes after automatic power failure, safer, more assured.5. USB charging. 450mAh battery, charged for 2 hours, massaged for 15 minutes every day, lasted for about 1 month.Specifications:Color: White/Pink/Dark BlueSize: 142*138*60mm/5.59*5.43*2.36"Material: ABS + 304 stainless steelWeight: 160gCharging mode: USBVoltage parameters: DC5V; 1A; 5WBuilt-in lithium battery capacity: 1600mAhDuration: Massage 15 minutes a day for about 1 month.Mode: Acupuncture and moxibustion mode, massage mode and knocking mode.