TENS pulse massage brings an energy SPA to the cervical spine. The pulse electric frequency is transmitted to the skin to simulate a variety of artificial massage techniques to achieve the effect of relaxing the spine. It has been widely used clinically (especially in the United States). Three modes, 16 levels of intensity Smart mode-suitable for business travel Soothing mode-suitable for car sleep Vitality mode-suitable for working overtime and staying up late Slow rebound memory foam, soft and elastic, cares for the spine. Memory foam, 360-degree support, no head-shifting after a nap, no soreness when waking up. 42â?? constant temperature hot compress system-like using a towel around your neck. Four invisible magnetic buckle adjustment-suitable for both thick and thin necks. Voice broadcast