Important information material: metal Package Size: 190×180×70mm feature: Size: 15*14*5cm Ergonomics. The massager adopts a U-shaped design, which conforms to the streamlined and ring-shaped design of the human cervical spine. Electric pulse massage. It can repeatedly stimulate nerve acupuncture points, promote metabolism, relax muscles, eliminate soreness, etc. The massager can be used on the neck, back, legs, waist, etc., and is suitable for the whole body.