USB Heated Shawl:USB portable charging, intelligent constant temperature, intelligent control, multi-level temperature adjustment, abnormal power failure, machine washable. Imported heating element is adopted, which is safer at low voltage. After reaching the preset temperature quickly and evenly, it will automatically enter the intelligent constant temperature mode. Three levels of temperature adjustment: 45 degrees, 40 degrees, 35 degrees.An ordinary 20,000mah power bank can be used for 8 hours to meet the heating needs of a day. Warmer: The built-in hand warmer allows you to read, watch TV or use your computer without feeling cold. Fiber Blanket: Super soft fabric is soft and smooth, comfortable to use and warm. Specification: Material: Flannel Size: 140x80cm/55.11x31.49inch Power: 10W Rated Voltage: 5V Package Includes: 1 Piece Shawl Electric Blanket