Feature: 1. Using far infrared hot compress, rapid temperature rise, uniform heating, stable performance. 2. High-tech carbon fiber heating wire inside, far infrared device, can be absorbed by the human body, the effect is improved. 3. One key to start, simple operation, convenient for parents to use. Hook and loop fastener, the tightness can be adjusted freely according to the body shape. 4. 7 massage modes can be selected, and the massage mode can be switched by pressing the key repeatedly to meet the needs of different people for massage strength. 5. One& 8209;key intelligent temperature control, 3 levels of temperature can be adjusted, satisfy your different needs. 6. The outer fabric is wear resistant and dirt resistant, soft and skin friendly, breathable and warm keeping. Specification: Item Type: Cervical Vertebra Massager Material: Carbon Fiber Power Supply Mode: Plug-in use Plug Type: US Plug Voltage: 100-240V Size: Average size. Hook and loop fastener adjustment, suitable for neck circumference 40-60cm / 15.7-23.6in, the size is not fixed. Can be used by the whole family, very convenient Applicable Symptoms: Sitting for a long time at work: shoulder and neck pain Long-term housework: stiffness of the cervical spine Long-distance driving: muscle stiffness Looking down at the phone: neck and shoulder pain Package List: 1 x Cervical Vertebra Massager 1 x Adapter