... carbon heating pads. 2.7.4V/4400 mAh intelligent Far-infrared energy heating jacket. warm jackets,Thermal Heating vests,Warm vest (HJ ... . Using high-tech bio-thermal fiber as fever, with far infrared function. Specifications: 1.DC 7.4V/4400mAh Li-polymer battery ... addition to heating, the FIR energy has also therapy function. By absorbing the energy eradiated by Far Infrared Ray, it will promote the ...