Seidio BD4-PBYIPH4-BK Innocell Plus Power Case for Apple iPhone 4/4S - 1 Pack - Retail Packaging - Black First iPhone 4/4S power case with a removable battery that is certified by Apple Sleek case (~ 0.73 cm) with our signature soft-touch coating provides scratch protection without adding much bulk Case includes a 1750mAh battery and slot allows users to swap out battery with a spare Included micro-USB cable allows you to sync and charge your iPhone 4/4S without the hassle of removing your case For use with Apple iPhone 4/4S