Descriptions:The use of 5V low voltage has no harm to the human body. It can be washed, and the power interface is isolated and waterproof.Three levels of temperature adjustment, warm range 45 (red light), comfort range 35 (white light), energy saving range 25 (blue light), one-key heating, you can choose the appropriate temperature range according to your needs and environment.Using fiber heating wire material, infrared heating, no harmful radiation, soft material, stable performance, environmental protection and energy saving, safe and reliable.For abdomen * 2, neck * 1, shoulder * 2, back * 2, waist * 2, nine-zone heating, one-key heating, three-stage temperature control, intelligent heating, for people who are afraid of cold in winter, front and back full body heating, in winter, there is no fear of cold.Need to be used with power bank(not included), using USB interface, can also keep warm when going out.Made of polyester with down filled, comfortable to touch and comfortable to wear.Three adjustable temperature levels to meet your needs.General USB power supply, fast heating, energy saving and long service life.Keep your body warm in winter, increase blood oxygen and fluidity.Helps to avoid sub-healthy state and restore vitality.Specifications:Product Name: Smart Heated VestVersion Type: Slim TypeStyle: cardiganCollar type: stand-up collarApplicable season: winterThree levels of temperature adjustment: warm 45 (red light), comfortable 35 (white light), energy saving 25 (blue light)Heating area: abdomen*2, neck*1, shoulder*2, back*2, waist*2, nine-zone heatingHeating material: carbon fiber wireWhether it can be washed: Yes, the power interface has been insulated and waterproofedFabric: Polyester Lining: Polyester fiberFilling: cottonWorking voltage: 5V, low voltage, no harm to human bodyNote: Must be used with mobile power (not included)Power interface: USB.Precautions:-If the heated vest is not used for a long time, the power should be cut off.-Do not use high-temperature heated water or strong alkaline pickling liquid to wash the jacket. The power supply must be cut off before cleaning.-It is strictly forbidden to use electricity for wet clothes. Please turn off the power and stop using it immediately after getting wet.Noticed:Power bank is not includedBox contents:Heated vest * 1USB cable * 1Noticed:Due to the different monitor and light effect,the actual color maybe a slight different from the picture color.Please allow 1-2cm difference due to manual measurement.