UNU Enerpak Micro 2800mAh USB External Battery Pack - [Black / Silver] Backup External Rechargeable Power Battery Charger For iPhone 6, iPhone 6 Plus, iPhone 5S / 5 / 4S / 4

About UNU Portable Power Bank:
The uNu battery pack is convenient power at its finest. Built to be small enough to fit inside a pocket, purse, or backpack, the battery packcan follow you everywhere. Plus, the Micro has a special flexible cable built into the design. Simply pull the cable out and begin to charge! When done, simply replace the cable back and the battery pack will return to its original form. Whether it's a smart-phone, tablet, or most any other handheld device, the battery pack can help boost your battery life considerably. Meaning low-battery warnings are a thing of the past.