1. Safe and Comfortable: Made with high-tech aerospace-grade aluminum and ABS materials, it is heat-resistant and explosion-proof. This mini hand warmer features a built-in intelligent protection system to prevent overcurrent, short circuits, and overload.2. 2-in-1 Hand Warmer and Power Bank: This hand warmer effectively warms cold hands, promotes blood circulation, and is an ideal choice for relieving hand pain. A perfect gift for friends and family during the cold winter months.3. Fast Hand Warming & Three Temperature Settings: Instantly releases heat with the press of the power button. Hands are quickly heated within seconds. Three temperature modes: Low 40°C, Medium 50°C, and High 60°C, choose your preferred setting.4. Large Capacity Battery: The 5200mAh high-capacity battery can fully charge most common digital devices on the market. A blue indicator light shows the remaining battery level.5. Pocket Size: Compact and lightweight.This hand warmer is easy to carry and can be easily placed in a pocket or bag, suitable for various occasions such as sports, fishing, hiking, camping, and skiing. Specifications: Material: Aluminum alloy, ABS; Color: Blue, Silver; Dimensions: 10.2 x 5.8 x 2.3 cm; Weight: 150 g; Battery Capacity: 5200mAh; Input/Output: 5V 1.5A; Package Contents: 2 x Hand Warmers; 2 x USB Data Cables; 2 x User Manuals