Feature:  1.Intelligent 9 heating areas , three stalls temperature control, effective warmth.  2.Convenient and practical, 10 seconds fast heat, low voltage, reliable and safe.  3.USB interface power supply, longer service life.  4.Comfortable and soft, light and great air permeability, waterproof and washable.     Specification:  Product Name: Heated Vest;  Color: Black;  Material: Polyester;  Size: M/L/XL/2XL/3XL/4XL/5XL;  Heated area: 9 heating zones;  Power Supply Interface: USB 5V/ 2A;  Temperature Shift (Manual adjustment): High Temperature: 55degree Celsius (Red Light);  Middle Temperature: 45degree Celsius (Blue Light);  Low Temperature: 35degree Celsius (White 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.Manual adjustment has three level, red light means high-temperature heating continuously. Blue light means medium heating continuously, white light means low heating continuously.  7.Press the chest temperature control switch for 2s,lights out and stop heating.     Note:  1. It is Not recommended to use high temperature for a long time to avoid burns.  2. Batteries, connecting plugs and chargers should aviod contact with water during operation. It should be used in completely dry condition.  3. NOT for Pregnants women, young children and those who can not express their willingness those with pacemakers are disabled.  4. Please DO NOT disassemble, modify the heating film and control circuit, to prevent man-made damage to hot components.  5. The cable is waterproof, can be washed.  6. People who are sensitivity to heat applications (diabetics,circulatory problems) should not wear the battery heated vest. Please consult your physician before using.  7. Always connect it to the power bank when heating.     Washing instructions:  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.