Features: 1.One Button Heating: The hand warmer with velvet can provide you with instant double sided heating in just a few seconds, one button easy to use system, and one button quick heating. 2.Intelligent and Safe Heating: Using high quality chipset to control the heat level, this hand warmer only needs a simple button to start heating up to a maximum of 55C, allowing you to keep your hands warm in cold weather. The LED display allows you to easily understand the heat setting and remaining battery power. 3.Real Comfort: Real Comfort: The velvet rechargeable handwarmer gives you a soft and warm touch. With pocket size and curved body, it is stylish, lightweight and easy to carry. 4.2 in 1 Electric Hand Warmer: The 10000mAh rechargeable battery can ensure long lasting heating for up to 8?12 hours. It can be used as emergency power bank for USB devices to quickly charge the device. 5.Perfect Gift: The 2 in 1 design makes the hand warmer more widely used. It is a great gift, very suitable for outdoor sports and activities, indoor offices, and outdoor transportation. specification:Item Type: Electric Hand Warmer Material: ABS, Aluminum Alloy, Silicone, Velvet Product Weight: Approx. 342-344g / 12.0-12.1oz Input: DC 5V/2A Output: DC 5V/2A Battery: 10000mAh Lithium Battery (built in) Heating Power: 10W Heating Temperature: 55 (maximum) PackageList:1 x Hand Warmer 1 x Charging Cable NoteWhen using the power bank function, the hand warming function is automatically turned off.