DescriptionUSB Washable Electric Heating Scarf Unisex Warm Soft Neck WarmerFeatures:Note: This product does not contain a power bankThis product needs to be connected to a power bank to keep the heat all the time, no charging function1. The product is heated by graphene, giving you more security.3. The implanted temperature sensor detects and feeds back the temperature of the heating film in real time to accurately control the temperature within the comfort range of the human body.4. Nano flexible heating film, material-level innovation, with PTC effect, to achieve precise temperature control and ensure safety.5. Heating for 90 minutes, the system will automatically cut off the power, you can warm all day.6. Dont wait for it to warm up, it will heat up as soon as it is turned on, and the temperature will quickly rise to 50 degrees.7. 3-level temperature controllable, red 60, white 50, blue 40, to meet a variety of use requirements.Specifications:Condition: 100% Brand NewProduct Type: Heated ScarfLength: Approx. 83cm/32.7inFunction: neck heating to keep warmGear: 3 gears, red 60, white 50, blue 40Instructions for use:1. Connect the USB cable to the power bank This product does not include a power bank2. Press and hold for 3 seconds to turn on, short press to switch the temperature, and long press to turn off.Packing List:1 heated scarfNote:Please allow 13cm error due to manual measurement. Thanks for your understanding.