Insulated jacket with a built-in carbon fiber heating element in the back and pockets. Powered by an external battery (not included), will give you a feeling of warmth and comfort in any weather. Heating is carried out thanks to a special high-tech film of carbon nanotubes located under the lining of the product. For maximum comfort, you can manually select one of the three operating modes or use an automatic one: after 5 minutes of operation at the maximum heating level, the heating pad will automatically switch to medium intensity mode. When using a 10000 mAh battery, the heating element will work from 6 to 12 hours, depending on the selected operating mode and ambient temperature. Insulated jacket with a zipper with a hood, 3 external zippered pockets and 1 internal zippered pocket Soft fleece lining Reflective element on the hood Windproof visor on the hood 2 heating zones: on the back and in the pockets there are 3 heating modes: up to 45 backlight), up to 35 backlight), up to 25 backlight) The necessary power supply: 5V 2.1 Maximum power: 7.5W; current: 1.5A; voltage: 5V We recommend using an external battery of at least 5000 mAh (it has an additional internal zipper pocket) Before washing, close the attached silicone cap and put the cord in your pocket. Wash by hand or in a washing machine at a temperature of up to 30 without air conditioning. Do not use bleach or aggressive detergents. Do not turn on the heating if the jacket is wet. Activation of heating: 1. Connect the external battery to the cable in the inner pocket of the jacket. 2. Press and hold the heating button for 2-5 seconds until the color indicator lights up. 3. Press the button again to select the temperature mode. 4. To turn off the heating function, press and hold the button for 2-5 seconds.