... up and down(sync massage chair,tapping and rolling in the same time inside have 3 motor)2, ... and automatic modes.4,under manual mode,there are three choices of overall,partial and fixed-massage,under fixed ... the width of the massage wheel can be changed in three degrees of wide,middle and narrow thille it is ... backward 120mm,the armest can be reversed in 90 degree.7,automatic chair with double Tray.