Description:  1. One button to heating, three stall temperature control, intelligent heating.  2. It can work up to 10 hours, this is a intelligence vest for you.  3. General USB interface power supply, longer service life,anti water splashing and washable.  4. It can be washed by machine or by hand.  5. With mobile power bank storge pocket design , easyto take when in travel.  6. One minutes fast heat, dispel cold and keep you warm.  7. Warm, comfortable and breathable, and it's a good partner for your winter going out.     Specification:  Product name: USB heated coat;  Color: black;  Material: nylon+polyester;  Size: S/M/L/XL/2XL/3XL/4XL;  Power Supply Interface: USB;  Power Supply: 5V/2A Mobile Power(Not Included);  Fever Area: Back and abdomen;  Temperature Shift(Manual adjustment);  Warm:45 degree Celsius (Red Light);  Comfort:35 degree Celsius (White Light);  Energy Saving:25 degree Celsius (Blue Light).     How To Use:  1.Take out USB plug.  2.Plug in removable charger.   3.Switch on the removable charger.  4.Press the chest temperature control switch for two second.  5.Red light flashing,means heating automatic.  6.After red light flashes for 5 minutes,then automatic turn to white light,means medium temperature.  7.Manual adjustment has three level,red light means hign-temperature heating continuously.  White light means medium heating continuously,blue light means low heating continuously.  8.Press the chest temperature control switch for two second,lights out and stop heating.     Washing Instruction:  1.Take out removable charger.  2.Neutral detergent is available and then hand wash.  3.Do not force knead or beat.  4.After nature air drying can be use.     Warm Tips:  1.If not used for a long time,please do not plug in removable charger.  2.Do not use high temperature water or strong acid detergent.  3.Forbidden to use electricity for wet clothes,Please turn off the power and stop using if cloth is wet.  4.Use time depending on the capacity of removable charge.     Package Included:  1 X USB Heated Coat.