Product Description

Product Code: OS*******1 *Keep you warm in frigid high mountain and winter. *Perfect for outdoor activties under frosty climate. *Adopting high-technical materials as heating object which has infrared ray function *Using high-capacity Li-on battery as heating sources charging up once can proved heat for ***8 hours according to different gear*Use super conductive and thin flexible heating element: Carbon Fiber Specifications: *Battery :7.4v / ***0mAh *Operation current:**0mA +/- **0mA(Maxium) *Heating power:3.2w +/- 0.5w *Heating temperature :*0 - *0℃ *Electric to heat , power exchange rate :>*5% *Heating vest including 2 pcs of heat element.