Description This is a intelligence vest for you With mobile power storge pocket easy travel 1 minutes fast heat dispel cold and keep you warm Set the temperature you want to respond to a variety of environments A button toheating three stall temperature control intelligent heating It can be washed by machine and can be washed by hand Do not wring it by hand General USB interface power supply longer service life anti water splashing and washable The fashion is warm comfortable and breathable and its a good partner for your winter going out Specification Material Polyester VelvetColor GreySize M L XL 2XL 3XLPower Supply Interface USBPower Supply 5V 2A Mobile Power Not Included Function Keep warm Anti water splashing and Prevent coldAge Of Application Adults MenTemperature 45℃ Warm Gear 35℃ Comfortable Gear 25℃ Energy Saving Gear Applicable ambient temperature 30 to 14 Degree How To Use 1 Take out USB plug2 Plug in removable charger3 Switch on the removable charger4 Press the temperature control switch for two second5 Red light flashing means heating automatic6 After red light flashes for 5 minutes then automatic turn to white light means medium temperature7 Manual adjustment has three level red light means hign temperature heating continuously White light means medium heating continuously blue light means low heating continuously8 Press the temperature control switch for two second lights out and stop heating Washing Instructions 1 Take out removable c