8 massage nodes: The 8 deep-kneading shiatsu massage nodes (4 large and 4 small) of this neck and back massager will effectively relieve muscle fatigue and alleviate stiffness in multiple areas of your body: neck, shoulders, back, arms, waist, legs, feet, and calves. The massage nodes provide bi-directional massage every minute. Gentle heat function: The optional heat soothes muscle pain and promotes blood circulation. ★ The heating light may be difficult to recognize because this massager is enhanced with double-layer fabrics to protect the skin. The heating will reach 104 ~ 113 °F in a gradual and gentle manner. Long shoulder straps: The long shoulder straps make it more flexible to massage your shoulders and back. 20-minute automatic shut-off: The integrated advanced heat function transfers heat to the muscles. Automatic shut-off in 20 minutes. Relax your whole body: Our back and neck massager comes with 8 rotating nodes. It also provides deep tissue massage to relax your entire body.