1,200 mAh Portable USB Hand Warmer in 4-Ears Shape includes the following features : 

• 3 Seconds fast double-sided, the effect is obvious, is your winter hands in the of the warm care
• Equipped with special lithium ion board: effectively overcharge, over-discharge, overcurrent, short circuit, etc.
• Slightly warmer, but also emergency backup battery
• 3 Temperature setting modes: low ~ 40°C; high ~ 60°C; constant ~ 50°C
• Input: 5V/1A
• Output: 5V/1.1A
• Rated power: 3.6-5W
• Built-in 1,200 mah battery
• Charging cable included
• Available in various colors
• Customized logo is accepted

Material :

• Aluminum alloy and ABS housing

Size closed :

• Length of 10.1 cm x Width of 5.7 cm x Thickness of 2 cm
• Net weight of 120 grams