XR-101 Professional manufacturers for electric massagers, massage hammer, tapping massager. FUNCTION: 1. Kneading and rolling massage function , effectively relieve discomfort and renew vitality. 2.Gear system will meet the different massage strength by variable speed controller. 3 Directional control button ( Fwd, Rev). 4. With the human engineering design, will make massager any parts of body easily,especially for back, waist and foot. 5.Buyers designs and OEM/ODM orders are welcome, ONE YEAR GUARRANTEE .