1.Backrest with combining massage functions of kneading, tapping, shiatsu and extension of muscles 2.Cushion of side pressure and wrapping massage of airbags 3.Calf massage by multi-layers airbags with circulation pressure. 4.Footrest with the function of air pressure and vibration 5.Backrest and footrest with stepless speed adjustment 6.Touch screen remote control 7.Rhythm synchronous mode