Warm whole the hand warmer keep you warm 52°C/ 5000mAh. The temperature of rechargeable hand warmer is controlled by chips automatically when charging, fireproof ABS material also protects it from high temperature The battery capacity of this reusable hand warmer is 5000mAh.There is 2 button on electric hand warmer, press the right button for 3s, it begins warm, and digital display the temperature. Also, press the right button for 3s to turn off warm mode. Press the left button to turn on power bank mode, and digital display the electricity. 

Digital Display: Visible temperature cold light digital display assure your safety.
Mini & Portable: The size has been carefully calculated, perfect to hold in one hand.
Lasting endurance: Start in 5s lasting for 4h.
Battery Capacity: 5000mAh
Features: Digital Display
Highest Temperature: 52 Celsius