Product weight: 220 gramsProduct Name: a neck massagerProduct size: about 640 (unit: mm)Product material: leather、 built in single motorProduct color: green、 etc.Product power: 5 section four battery (self match)Product tips:1、 the general use of the best 15 minutes、 not long time to wear (any stimulation of reflex therapy is not beneficial for more than 15 minutes).2、 before drinking a cup of water、 in favor of the elimination of the body of toxins.Product function:1、 with the effect of non surgical treatment of traction in the hospital.The normal line can restore cervical intervertebral joint.In favor of the spinal cord.Adjust the cervical spine to maintain normal state.2、 the lifting of the cervical nerve compression caused by the involvement of pain.3、 promote blood circulation、 eliminate hematoma and inflammation、 improve blood supply.4、 ease or inhibit bone hyperplasia.5、 improve the state of sleep、 promote sleep、 increase the depth of sleep.6、 adjusting the function of cervical spine and peripheral tissues.