Colour:Blue  |  Size:4XL Specifications: Product name: heating vest Version: Slim type Style: cardigan Collar type: standing collar Placket: zipper Whether hooded: yes Fabric: Polyester Lining: polyester fiber Suitable for the crowd: both men and women, for the people whose back is easy to be cold Intelligent temperature control: low (25 ° C) - mid (35 ° C) - high (45 ° C) Fever description: carbon fiber heating wire, compared with ordinary metal wire heating, it has high strength, high modulus, high temperature resistance, wear resistance, corrosion resistance, creep resistance, good electrical and thermal conductivity, 1 minute heating Working voltage: 5v, low voltage, safe and reliable Heating sheet: 1 piece on the back + 1 piece on the neck Whether to support hand washing: Yes, the power interface is insulated and waterproof Package included:  1 x heating vest 
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