The ActionHeat 5V Battery Heated Knit Hat is designed to keep your head warm when during winter activities with two heating zones positioned over each ear. Featuring a stylish design, the hat traps your head's natural heat, you will love the extra comfort of strategically placed heating panels on both ears. Once the knit hat is powered on, the heating elements quickly heat up and keep your whole head toasty. The rechargeable 5V lithium-polymer batteries deliver 3 levels of heat, controlled by the temperature controller on the hat. The hat can reach a maximum temperature of 130F while lasting up to 4.5 hours. HOW TO USE: Charge Up - Fully charge power banks with provided charger kit. Plug-In - Connect the power bank to the USB plug located in the pocket on the back of the head Turn On - Press and hold the touch-button control on the hat for 3 seconds. Press the touch-button to adjust the temperature. Features: Built-in heating panels strategically placed over both ears Touch-button control technology (3 settings) 4 LED power indicators display the power bank's battery life Battery Voltage: 5-Volt One size fits most Patented Technology: The ActionHeat 5V Battery Heated Knit Hat features advanced heating pads on the ears, which offers targeted heating to keep you warm. It is powered by a compact 5-volt rechargeable battery. Dedicated Heat Settings: With three adjustable heat settings, you can easily customize the level of warmth to suit your preference. Experience instant heat that penetrates through the fabric, ensuring your head stays comfortably warm for up to 4 hours. Comfortable and Stylish Design: This winter wear is expertly crafted with a blend of soft and durable materials, providing a comfortable fit while ensuring long-lasting use. The classic knit design adds a touch of timeless style, making it suitable for various outdoor activities as well as casual wear. Extended Battery Life: Worried about running out of heat? Fear not. This cap is equipped with a 5V 3000 mAh power bank for extended battery life that allows for 4 hours of use on a single charge. Easy Care and Maintenance: This sports hat is designed to be low maintenance and easy to care for. The hat is durable and machine washable when needed. Material Contents: 70% acrylic, 30% wool with fleece lining An advanced heat-trapping insulation layer Ultra-fine carbon fiber heating panels Estimated Heating Times: High (Red): 150F - 2.5+ Hours Medium (White): 130F - 3+ Hours Low (Blue): 110F - 5+ Hours Includes: (1) ActionHeat 5V Heated Knit Hat (1) ActionHeat 5V Power Bank (3000mAh) (1) USB Charging Kit ActionHeat 5V Battery Heated Knit Hat