Slim Metal Power bank 4000 mAh

Massive capacity Lithium-ion batteries from LG, Samsung, LISHEN, etc.
Beautifully engineered protective technologies
Aluminum-alloy body
4000mAh high capacity, can support 2 times charge for iPhone 5s
MI charger's intuitive design makes it ready to use out of the box
World's top circuit protection chip with 9 protections
Plays well with others MI charger actively adjusts its output to make sure your device is getting an optimal charge
MI charger is compatible with all Xiaomi, Apple, Samsung, HTC, Google, and Blackberry mobile devices. It also supports some digital cameras and mobile gaming devices