The use of a low voltage of 5 V will not present any danger to the human body. It can be washed and the power interface is isolated and waterproof. Temperature adjustment levels, 45 hot beach (red light), 35 comfort range (white light), energy saving range 25 (blue light), heating with a key, you can choose the appropriate temperature range according to your needs and the environment. Using a fiber heating material, infrared heating, no harmful radiation, a material Flexible, stable performance, environmental protection and energy saving, safe and reliable. For abdomen * 2, neck * 1, shoulder * 2, back * 2, size * 2 , heating with nine zones, heating with a touch, temperature control in three stages, smart heating, for people who are afraid of cold in winter, front and rear full heating, in winter, there is no fear cold. Must be used with the power bank (not included), using the USB interface, little You also stay warm when leaving. Description: Made of polyester with padded down, pleasant to the touch and pleasant to wear. Three adjustable temperature levels to meet your needs. General USB feeding, fast heating, energy saving and long Lifespan. Get your body warm in winter, increases oxygen and fluidity of the blood. Aide to avoid the state of sub-series and to restore vitality.SPECIFICATIONS: Product name: Intelligent-downstype vest version: MINCESTYLE TYPE: CARDIGANTYPE OF COLLIER: Applicable amount of mounting: Temperature adjustment levels: hot 45 (red light), comfortable 35 (white light), energy saving 25 (blue light) heating area: abdomen * 2, neck * 1, shoulder * 2, back * 2, size * 2, heating with nine heating areas: carbon fiber wire can be washed: yes, the power interface has been isolated and waterproofed : polyesterdoublure: polye fiber STERREMPLING: Operating cotton blood pressure: 5 V, Low voltage, no danger for the humanremarque body: must be used with a mobile power supply (not included) Power interface: USBPRESCAUTIONS: -If the heating vest is not used for a long time Period, the power supply must be cut off.-N'Utilize no high temperature heated water or powerful alkaline stripping liquid for washing the jacket. The power supply must be cut before cleaning. It is strictly prohibited to use electricity for wet clothes. Please turn off the device and stop using it immediately after being wet. Remark: the food bank is not included in the box: heated vest * 1 table USB * 1REMARQUE: Due to the difference between the monitor and L 'Light effect, the real color can be slightly different from the color of the image. Provide a difference from 1 to 2 cm due to manual measurement Product name: Intelligent heating vest Version type: slim type Style: Cardigan Collier type: Amount of collar Applicable season: Winter Heating equipment: Carbon fiber wire Fabric: polyester Lining: Polyester fiber Fill: Cotton