This mini hand warmer with intelligent protection system is made of aircraft-grade aluminum and ABS material, anti-scald and explosion-proof. It's a 2-in-1 device that offers both hand warming and power bank capabilities, with 3 levels of temperature and a 5200mAh capacity. The compact and light design makes it easy to carry while doing outdoor activities. Features 1. SAFE AND COMFORT: Made of high-tech aircraft-grade aluminum and ABS material, anti-scald, explosion-proof. This mini hand warmer have built-in intelligent protection system is provided with safeguard of power on, short circuit and over loading. 2. HAND WARMER and POWER BANK 2-in-1: This Hand Warmers really helps warm up your cold hands and gets the circulation going, great for relief of aches and pains. Best Gifts for Friends and Family in cold winter. 3. QUICK WARM HANDS and 3 LEVELS: Press the switch and instantly release the warmth for you. Rapidly warm up double sides in seconds. Three levels of temperatures: Low: 104F, Medium: 122F, High: 140F at your choice. 4. LARGE BATTERY CAPACITY: 5200mAh capacity can give a full charge to mainstream digital devices on market, the blue light will show how much charge is left. 5. POCKET SIZE: Small and light. Handy carrying anywhere with any pocket or bag while sporting,fishing, hiking, camping, skiing. Specification Material: Aluminum alloy, ABS Color: Blue, Silver Size: 10.2 x 5.8 x 2.3 cm Weight: 150 g Battery Capacity: 5200mAh Input / Output: 5V 1.5A Package Include: 2 x Hand Warmers 2 x USB Cable 2 x User Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.