2 in 1 Hand Warmer - 5200 mAh large battery capacity rechargeable battery ensures the long-lasting heat up to 12 hours. It doubles as a backup battery for your USB devices at any time.
3 Heat Settings - Press the switch and instantly release the warmth for yo, you can adjust the operating temperature up to 131＊F (95-107～F/104-118～F/118-131～F ) for plenty of heat to keep your hands warm in colder weather.Safe & Easy to Use - One button to control the temperature and one to use powerbank f
