1. The use of a low tension of 5 V will not cause any danger to the human body. It can be washed and the power interface is isolated and waterproof. 2. Temperature adjustment to three levels, hot temperature 65 C (red light), comfortable 55 C (white light), energy saving 45 C (blue light), heating to a touch, you can choose the range of appropriate temperature and environment according to your needs. 3. Use of a fiber heating material, infrared heating, no harmful radiation, flexible material, stable performance, environmental protection and energy saving, safe and reliable. 4. Suitable for the stomach * 2, the abdomen * 2, the neck * 1, the shoulder * 2, the back * 2, the size * 2, the heating at 11 zones, the heating to a touch, the control of The temperature in three stages, intelligent heating, adapted to people who are afraid of cold in winter, the vest will become warm before and after, so it is not afraid of cold in winter. 5. It must be used with a power bank (not included, must be ordered separately), use the USB interface and stay warm when you go out. 1. Polyester material, with down cushion, good hand and comfortable feeling to wear. 2. Three temperature levels can be adjusted to meet your needs. 3. Universal USB power supply, rapid heating, energy saving and electricity saving and long lifespan. 4. Keep warm in winter, increase the oxygen content and the fluidity of the blood. 5. Helps to avoid a state of sub-series and to restore vitality. Prevention: 1. If the heating vest is not used for a long time, the power supply must be disconnected. 2. Do not use high temperature heated water or strong alkaline stripping solution to clean the sheath. The power supply must be cut before cleaning. 3. It is strictly forbidden to boost wet clothes. After being wet, immediately cut the power supply and stop using it. Remark: the food bank is not included. (Need to place a separate command) .SPECIFICATION:> Name: smart heating vest> Edition type: ultra-thin> Style: vest> Collar type: Applicable collar> Applicable season: Winter> Temperature adjustment on three levels : hot 65 C (red light), comfortable 55 C (white light), energy saving 45 C (blue light)> heating zone: abdomen*2, abdomen*2, neck*1, shoulder*2 , back*2, size*2, 11 heating zones> Heating equipment: Carbon fiber wire> Washable: Yes, the power interface has been insulated and waterproof> Fabric: polyester> Lining: Polyester fiber> : Cotton> Working tension: 5V, Low voltage, no danger for the human body> Note: must be used with a mobile power supply (not included)> Power interface: USB> Size: as indicated in the image. Included:> 1 * Heated vest.Ramarques:> Due to the manual measurement, the error range can be 1 to 3 cm, please understand.> Due to different display Hages and lighting effects, the real color can be slightly different from the color of the image. > Edition type: Ultra-thin> Style: Vest> Collar type: Applicable collar> Applicable season: Winter> Fabric: Polyester> Lining: Polyester fiber> Filling: Cotton> Power interface: USB> Size: As indicated in the image.