Ultra-Slim Ultra-Portable Ultra-Safe 2500mAh Wallet Pocket Power Card Power Bank, ONE-for-All External Mini Battery for Most Smart Phone and Digital Devices(White with Lightning Adapter)

Slightly bigger than a credit card, size fits in almost any pocket and purse.2.11oz, nearly zero burden carry-on.No extra cables to keep up with or get tangled up.The adapter helps extend the power banks compatibility.Slot for adapters storageStick-on Phone Pocket included helps carry the Power Bank with your cell phone.Cell phone, cards, coins, backup battery, all in one.It is your backup power always within reachIt may not give your phone a complete charge, but it can keep your phone alive in an emergency till you can find a stable power supply.