Rechargeable Cervical Spine Electromagnetic Shock Device Multi-functional Cervical Spine Neck Protection Device Features: 2 massage heads provide comfortable massage. Tightly cover the muscles around the cervical spine and areas of pain throughout the body. Instantly releases neck tension in front of a computer or smartphone for countless hours of effective massage. Relieve headaches, chronic fatigue and neck muscle relaxation. Humanized design, adapt to the of human neck, better massage effect. Enjoy relaxing massage anytime, anywhere, wireless hanging neck, weight, easy to carry, suitable for home, office, business travel and other. Short press the + button to increase the strength. There are a total of multiple gears and six massage modes to choose from. Low frequency, relieve neck pain, convenient, and portable, automatically shut down 15 minutes of work Product details: include: 1X Neck