Talk and charge simultaneously with this 4400mAH emergency phone charger for use with smartphones or USB devices. An excellent back-up power source, it`s an easy way to charge essential electronic equipment when you`re out and about. Small enough to fit in your pocket, this mobile charger comes with a Micro-USB charging cable and is capable of fully charging a smartphone in just 2 hours.The Power Bank can be easily charged by plugging the cable into a USB socket.