1. SAFE AND COMFORTABLE: Made of high-tech aircraft-grade aluminum and ABS material, anti-scald, explosion-proof. This mini hand warmer has a built-in intelligent protection system that provides power, short circuit, and overload protection. 2. HAND WARMER & POWER BANK 2-in-1: This hand warmer really helps to warm up your cold hands and get the circulation going, perfect for relieving aches and pains. Best gifts for friends and family during the cold winter. 3. QUICK WARM HANDS & 3 LEVELS: Press the power switch and instantly release heat for you. Heat up double sides quickly in seconds. Three temperature levels: Low: 40°C, Medium: 50°C, High: 60°C for your choice. 4. LARGE BATTERY CAPACITY: 5200mAh capacity can provide a full charge to mainstream digital devices on the market, the blue light shows how much charge is left. 5. POCKET SIZE: Small and lightweight. Convenient to carry anywhere in your pocket or bag when you are 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 Includes: 2 x Hand Warmer 2 x USB Cable 2 x User Manual