Features: 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 Blue Size: 142*138*60mm/5.59*5.43*2.36" Material: ABS + 304 stainless steel Weight: 160g Charging mode: USB Voltage parameters: DC5V; 1A; 5W Built-in lithium battery capacity: 450mAh Duration: Massage 15 minutes a day for about 1 month. Mode: Acupuncture and moxibustion mode, massage mode and knocking mode. Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3cm measuring deviation due to manual measurement. Package Details: 1 X USB Neck Massager 1 X USB Charger 1 X Remote Controller 1 X User Manua