The ActionHeat 5V Battery Heated 1/2 Zip Pullovers are revolutionary in the world of heated clothing. Using the patented 5V signal technology, it allows for most 5V battery to be used with the ActionHeat garments. The ActionHeat heated 1/2 zip pullover shirt comes with a powerful ActionHeat 5V Power Bank 6000mAh. This power bank powers your garment and can also charge your phone, tablet, or any USB charged device. Note: Heating times will diminish if used to charge other devices. ActionHeat battery heated apparel utilizes innovative technology designed to warm the core body temperature. These revolutionary garments feature built-in heating panels and are made with ActionFlex material that provides lightweight warmth, comfort, and versatility. HOW TO USE: Charge Up – Fully charge power banks with provided charger kit. Plug-In – Connect the power bank to USB plug located in the pocket. Turn On – Press and hold touch-button control on the chest for 3 seconds. Press touch-button to adjust the temperature. Features: Machine Washable - Gentle Cycle The powerful Tri-Zone heating system includes 3 built-in heating panels, strategically placed on the chest and upper back to warm your core body temperature. Touch-Button Control Technology (3 settings) 4 LED power indicators display power banks battery life. 1/2 Zip Design (YKK Zipper) Battery Voltage: 5-Volt Power System: 2 amp Colors Available: Grey, Blue, Black Sizes Available: Men’s S-XXL Women’s XS-XL Material Contents: Ultra-fine carbon fiber heating panels. 91% Polyester, 9% Spandex Estimated Heating Times: High (Red): 150F – 2+ Hours Medium (White): 130F - 3+ Hours Low (Blue): 110F – 4.5+ Hours Includes: (1) ActionHeat 1/2 Zip Heated Pullover Shirt (1) ActionHeat 5V Power Bank (6000mAh) (1) USB Charging Kit