This power bank has 4000 mAh instead of the usual 2200. With dual ports, it can charge two devices at once. The included cable recharges the power bank but also charges Android devices that use Micro USB. And you have the option of a full color logo. What is mAh? mAh is short for milliAmp/hours. It's a measurement of the amount of energy the battery can store. For example, an iPhone 6 has approximately 1810 mAh.
0.39"H x 2.36"W x 5"L