The ActionHeat Heated Jackets are revolutionary in the world of heated clothing. Using the patented signal technology it allows for most portable energy sources to be used with the ActionHeat Jackets and Vests. The ActionHeat Jacket comes with a super powerful ActionHeat energy source. This powers your garment and can also charge your phone tablet or any device. Note: Heating times will diminish if used to charge other devices. ActionHeat 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.ActionHeat heated garments use FAR infrared heating and ActionWave heat reflective technology to deliver hours of heat and comfort. ActionHeat allows you to stay warm and enjoy outdoor winter activities longer than ever before. HOW TO USE: Plug-In Connect the energy source to the plug located in the pocket.Turn On Press and hold the touch-button control on the chest for 3 seconds. Press the 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 the energy life. 2 zippered pockets plus a hidden energy pocket Cinch bungees for a comfortable fit. Colors Available: Black Navy Sharkskin GreySizes Available: Mens: S-4XL Womens XS-3XLMaterial Contents:Fabric: 94% polyester. 6% spandex. Breathable fleece lined soft shell. Water-resistant softshell sheds rain and snow .Advanced heat-trapping insulation layer. Ultra-fine carbon fiber heating panels. YKK Zippers Estimated Heating Times:High (Red): 150F 2+ HoursMedium (White): 130F - 3+ HoursLow (Blue): 110F 4.5+ HoursIncludes:(1) ActionHeat Jacket(1) ActionHeat Energy supply kit.