5200mAh Power Bank Hand Warmer Rechargeable Hand Warmers Electric Pocket USB Specification: Material: aviation aluminum alloy + ABS Color: Pink/Green Power supply: USB charging Input voltage: DC5V/2A Output voltage: DC5V/2A Working time: 3-6 hours Battery capacity: 5200mAh Feature: *1. 3 levels of temperature control, double-sided heating, you can choose the best temperature according to your needs, and keep your hands warm even on cold days. *2.  USB charging is fast and convenient. . *3. The two-in-one hand warmer can also be used as a mobile power bank to charge your mobile phone. It can be carried with one hand or placed in your pocket. It can be used to warm your hands, feet, knees, and belly. You can take it with you when you are exercising, fishing, hiking, camping, skiing, traveling or outdoor sports. *4.  It is the perfect gift for family and friends to spend the cold winter. Packages: 1 X Hand Warmer 1 X USB Cable