The ActionHeat Magnetic Dual Electric Hand Warmer with its innovative 2-in-1 design is an excellent addition to your outdoor adventures. Light, convenient, and designed to keep both of your hands warm simultaneously, this ActionHeat Hand Warmer also acts as a portable battery charger for your USB-powered devices. Built with high-quality casing, this stylish rechargeable hand warmer will provide smooth and even heat all throughout the hand warmer to keep your hands and fingers warm. The user-friendly button controls are designed to make it easy to turn on and off and check the battery life, so there is no guessing, just warmth.