... of oxygen supply,strenghth of blood circulation,body sliming,skin beauty,illness recovery,senescence delaying & etc. Function keys ... Steaming(prohibitted for this model),efficacy of losing weight,skin whitening,illness treatment,illness resistanceNote:Far infrared and steam ... of oxygen supply,strenghth of blood circulation,body sliming,skin beauty,illness recovery,senescence delaying & etc. Service:1 ...