Dimensions : M/L/XL/2XL/3XL/4XL/5XL/6XL/7XL Heating area: : front *4, rear *6 Power supply : USB power supply (charging treasure) Package Includes: : Heated vest *1 (without mobile power supply) Features: *1. Adopt carbon fiber heating wire, which has fast heating speed, stable performance, environmental protection and energy saving. *2. Soft and comfortable lining, fine and delicate, warm and comfortable to wear. *3. Use USB universal interface. In order to ensure the best heating effect, it is necessary to use mobile power supply with 5V/2A output. *4. The vest has 10 heating areas, which can promote blood circulation and keep you warm, heat the stomach, back, waist and abdomen area to keep warm. *5. The power interface shall be insulated and waterproof, without disassembly, and can be washed by hand or machine.*6. Suitable for outdoor skiing, winter fishing, mountain biking, cycling, camping, snow hiking, hunting, office and more. Usage:(1) Unplug the USB plug.(2) Access the mobile charging power supply.(3) Press and hold the chest temperature control output switch for 3 seconds.(4) Press the chest temperature control switch for 3 seconds to start preheating, and then adjust the heat to a moderate temperature when the mobile power supply needs to be connected all the time.(5) Manually adjust to the third gear, the warm gear is 45 degrees Celsius, the comfortable gear is 35 degrees Celsius, and the energy saving gear is 25 degrees Celsius.(6) Press and hold the chest temperature control switch for 3 seconds, and then turn off the lamp to stop heating. Note:*1. All pictures are professionally color-coded, but there may be some deviation between the pictures you see and the objects themselves due to the difference of ambient light and display equipment settings. Please understand.*2. The data is measured manually, and there may be some deviation, but it does not affect the use.Products from ChunChuan's store