HEATED THERMAL HEATING VEST 4XL Function: 1. The use of low voltage 5 V will not pose a threat to the human body. It is washable and the power interface is insulated and waterproof. 2. Three levels of temperature control, warm range 45 (red light), comfortable range 35 (white light), energy saving range 25 (blue light), one-button heating, you can choose the right temperature range according to your needs and environment. 3. Using fiber heating wire, infrared heating, no harmful radiation, soft material, stable performance, environmental protection and energy saving, safety and reliability. 4. 5. Specification: Version Type: Slim Type Style: Cardigan Collar Type: Stand-Up Collar Applicable Season: Winter Three levels of temperature control: heat 45 (red light), comfortable 35 (white light), energy-saving 25 (blue light) Heating area: belly * 2, neck * 1, shoulder * 2, back * 2, waist * 2, nine-zone heating Heating Material: Carbon Fiber Wire Can it be washed: Yes, the power interface has been insulated and waterproof Fabric: polyester Lining: polyester fiber Filling: cotton Operating voltage: 5V, low voltage, no danger to human body List of packages: Heating vest * 1 USB cable*1 Note: Power interface: USB Precautions: -If the heating vest is not used for a long time, disconnect the power supply. - Do not use heated high temperature water or highly alkaline digestion fluid to wash the jacket. Before cleaning, disconnect the electrical power supply. - It is strictly forbidden to use electricity for wet clothes. Turn off the power and stop using it immediately after getting wet.