Features: A: 5 Differents Massage Modes: simulate taping, scraping, acupuncture massage, relieve tension around the shoulder and neck. B: 3 seconds fast heating. Low and high heating mode, suitable for different people, effectively relieve for neck stiffness and fatigue. C: 16 EMS level for different needs. 1-5 level: primary strength, the feeling of ants crawling. 6-10 level: middle strength, like mobile phone vibration. 11-16 level: strong strength,sense of acupuncture. D: U-shaped design, 360 flexible electrode plate with high tenacity elastic arm. More ergonomic, fits detter to the neck. E: Small and light like a mobile phone. Portable and easy to carry.