a) Inner vest object with removable heating elements.
b) 7.4V 2200mAh Li-ion battery, 5 -position temp.-control
c) Global charger.
Power: 7.4V 7.4W
1. Heat sources are distributed over the back and the two sides of the chest, which can relieve unwell feeling caused by cold of the back and the shoulder and at the same time facilitate blood circulation to achieve the best effects of keeping warm and healthy.
2. Use high technological bio-thermal fiber as a heat source.
3. Possess far infrared physical therapy (radiating 5-12um light wave on conducting electricity).
4. Micro CPU (five levels digital temperature control panel) can adjust temperature (between 40℃ and 70℃) in accordance with the different areas.
5. Battery working time: about 4-12 hours.