Functions: 1, Massage by the microcomputer programming 2, Massaging back mode: Massage, kneading, knocking, rolling and pressing. 3, Automatic position-changeable rolling wheel can make the rolling wheel massage in inward or outward and negative direction 4, Guide mechanism makes the rolling wheel to travel up and down closely to the two sides of the back vertebra. 5, Special air-style massage for the hip and leg, and strong or weak massage manner for choice 6, Back cushion and calf pad can be adjusted the abgle electrically. 7, Personality massage, locating and local massage function, moreover, it has manifold massage program, choice for intensity and speed, and locating function. 8, Revolving board mechanisn will make the seat chair revolve up to 45, the calf pad will be turned out from 0-180 degree 9, It is designed basing on the person's body structure, so owning mellifluous and comfortable appearance with well-ventilated &durable feature.