Color: Silver + black - Metal material housing - Function both as emergency battery pack and hand warmer - Capacity: 4400mAh - Input: DC 5V 1A - Output: DC 5V 0.5A - Temperature mode: High > mid > low - Temperature range: 42'C ~ 49'C - Great emergency battery pack for all your device with USB charging cable - Warm your freezing cold hands " helps blood circulation and prevent chilblains in the winter time - Package includes: - 1 x Emergency battery pack hand warmer - 1 x Power adapter (AC 110~250V / 2-flat-pin plug) - 1 x USB male to mini USB charging cable (40cm) - 1 x USB female to mini USB cable (20cm) - 1 X Carrying pouch - 1 x Chinese / English user manual "