Features: 1.Double Sided Heating: The rechargeable hand warmer can provide you with instant double sided heating in just a few seconds. One button easy to use system, one button quick heating. 2.Fashionable and Creative: Hand bag warmer has fashionable and creative handbag appearance, with a metal chain, very suitable for ladies to use when traveling and shopping. 3.10000mAh Battery: The 10000 mAh rechargeable battery can ensure long lasting heating for up to 7?9 hours. It doubles as a backup battery for USB devices, charging the device quickly. 4.2 Heating Settings: There are 2 different temperatures [ 455 ] and [555], which can reach the temperature you want very quickly. Let you keep your hands warm in cold weather. The LED display allows you to easily understand the heat setting and remaining battery power. 5.Two in one and Application: Two in one quick hand warmer and mobile power supply. Not only a small hand warmer, but also an emergency backup battery. An excellent gift. Very suitable for outdoor sports and activities, indoor office, transportation, indoor games. 6.Comfortable Surface: The soft and comfortable surface, curved shape allows you to easily wrap around and enjoy the warmth from palm to thumb. The lightweight and stylish design can easily fit in a pocket or secure to a glove. specification:Item Type: Hand Warmer Material: ABS Weight: Approx. 373g/13.2oz Power Input: 5V-2A (Max) Power Output: 3.7V-3A Charging Current: 2A Working Current: 800mA-3A Rated Power: 10W Battery Capacity: 10000mAh Lithium Battery (Shipped with Battery) Charging Time: 6-8 Hours Hand Warmer Use Time: 7-9 Hours Hand Warmer Temperature: Low Grade 455, High Grade 555 PackageList: 1 x Hand Warmer 1 x Chain 1 x Storage Bag 1 x Charging Cable 1 x Manual