Neck part :Four kneading rollers perform single or alternate massages. Eight kneading massage rollers at the back area and four tapping massage rollers at waist. Two automatic programs(refresh massage,relax massage),additional heat function,shoulder height adjustable. Vibration massage on the seat with three selectable intensity levels. Air pressure massage for waist with 3 selectable intensity levels. Shoulder height adjustable. Additional red light and heating therapy for back & waist. Convenient remote control.