Personified mechanic massage hands in the back,various function of kneading,flapping and tapping,each of which have three part speed for choice and the massage rollers width adjustable. The vertically movable massage hands provide overall,partial and fixed position massage. Three airbags in the seat cushion,eight airbags in the calf support,four air massage modes with optional intensities. Arthrosis traction at the knees. Elegant and luxurious outward appearance with comfortable massage. With odditional tray.