Feature: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. For belly * 2, neck * 1, shoulder * 2, back * 2, waist * 2, nine-zone heating, one-button heating, three-stage temperature control, intelligent heating, for people who are afraid of cold winter, full heating at the front and back, In winter there is no fear of cold. 5. . Heated Vest Heated Jacket size. L Specification: Product Name: Intelligent Heating Vest 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 . Heated Vest Heated Jacket size. L Precautions: -If the heating vest is not used for a long time, disconnect the power supply. - Do not use heated high temperature water or strongly alkaline digestion fluid to wash the jacket. Electrical power must be disconnected before cleaning. - It is strictly forbidden to use electricity for wet clothes. Turn off the power and stop using it immediately after getting wet. . Heated Vest Heated Jacket size. L