This product is installed with a mechanism of muted manipulators which is able to move up and down and driven by four wheels together with a pair of vibrant balls at backrest. It has six simulating manipulations of shiatsu, kneading, patting, knocking, kneading and patting and vibrating. It is designed with two modes of the upper body automatic and manual control. In the manual mode, there are three options for the entire, spotting and partial process, The massage wheels can move up and down with high and low vibrant intensity for the spotting. There are also 3-speed options for other functions, there are three width options for three manipulations of shiatsu, patting and knocking. The cushion has the three air bags, eight bags in the shank area, This machine has four modes of pressure massage, two intensity levels and knee joint drawing. The motor drives the switch is on, the positions of the shoulder wheels with memorial function are finely tuned with a five-level controller. When the switch is off, the manipulators will automatically return and stop at the highest positions on the backrest. This product embodies a friendly design of comfort and is covered with complete humanity qualified leather with taste of luxury and classic, providing both sitting and lying pleasure. POWER:180w N.W.:75GS MEAS:110*75*78.5 48PCS/20FS 96PCS/40FS