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Achieve both power and protection for your iPhone 4 or 4S with the Hybrid Snap-on Case / Extended Battery for iPhone 4/4S (White/Blue) from Boostcase. The protective case snaps onto the phone and is both slim and lightweight. Plus, it comes with an optional snap-on extended battery pack.
Since the battery is removable, you can attach it only when you need power for your phone -- so you won't be carrying extra bulk when you don't need to. It's also modular, so you can mix and match the style to your mood. The two parts of the case fit together seamlessly. There is a small, pear-shaped opening on the back revealing the Apple logo, which is also a keyhole for the sliding lock on the detachable battery.
The 1900 mAh battery is able to double the battery life of your iPhone 4/4S and has a full set of features including power on/off, battery level indication, syncing and charging via standard micro USB (with or without phone connected), and is certified as "Made for iPhone."
Minimal slim-fit lightweight protective case
Case snaps firmly onto your iPhone 4/4S
Small, pear-shaped opening on the back revealing the Apple logo
Also a keyhole for the sliding lock on the detachable battery
1900 mAh battery
Able to double the battery life of the iPhone 4 or 4S
Battery level indication
Syncing and charging via standard micro USB
Certified as "Made for iPhone"
In the Box
Boostcase Hybrid Snap-on Case / Extended Battery for iPhone 4/4S (White/Blue)