... , back, waist, upper body and lower body) for selection.5. Manual massage functions for the upper body: shiatsu, kneading, tapping, knocking ... is adjusted in three steps.9. Air pressure massage: head→ 10pcs airbags, cushion→7pcs airbags, calf & feet rest →28airbags, ... different people height.11.Vibration massage for seat position. Two steps of intensity adjustment for vibration.12. MP3 music function ...