Product Features: Hand warmer & power bank 2-in-1. >Perfect gift ideas for family and friends. >Unique, fashion, portable, lightweight, convenient to carry it to anywhere. >Double-sided and 3 heating warms setting. >Quick heating up in 3 seconds, each full charge can heat (95°F) up to 7-8 hours. Hand Warmer Specification: Input: 5V/2A Output: 5V/2A Item Weight: 155g Battery Capacity: 5200mAh Size: 11.6 × 6.2 × 3.2cm Charging Time: 2-3 hours Working Time: 4-8 hours Important Notice1. Please Keep away from water. 2. Do not charge and heating simultaneously. 3. Please stored in a cool and dry place when do not use it for a long time. 4. Put on cloth pouch to avoid scald when they get too hot for skin contact. Package Contents: 1 X 5200mAh Hand Warmer 1 X Cloth pouch with drawstring 1 X USB Charging Cable 1 X User Manual