Features Led digital screen: Smart led display is cool to check current temperature or how much energy left at a glance. Easy to carry: Its slim and compact size fits a lot in your hand, making it perfect for carrying anywhere. 2 in1 functions: 4000mah large battery capacity, a full recharge within 6 hours can keep your hands warm all day It can also double as a power bank to charge your phone multiple times. Perfect gift: Still confused what gift to give to your parents, lovers or friends? Hand warmer is the best choice to bring warmth and love to them in cold winter. Safe and intelligent: Safe to use, the built-in intelligent system provides effective protection against overload, overheat, overvoltage, short circuit. Specification Material: PC+Aluminum Alloy Optional colors: Black/Green/Pink Size: approx.9.6x7cm/3.74x2.75in Rated voltage: 5V1A Rated power: 5V1A Battery: 4000mah Power supply: USB Optional colors: Black/Green/Pink Quantity: 1Pc Note Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package Contents 1xMini Hand Warmer (other accessories demo in the picture is not included.)