... back, waist, shoulder, knee. BNA-01BNA-02BNA-01 infrared health care body warmerCharacterasticsSpecificationsModel BNA-01Model BNA-02Model BNA-03Length105mm105mm105mmWidth63 ... temperature of radiation is closed to bodys temperature, and infrared spectrum is closed to bodies spectrum, the spectrum is ... only 3~8W is needed for use.5. The heating element is PTC heater, manufactured by our company, surface ...