Series: myPower Type: Battery Compatible Phone Manufacturer: iPhone 4/4S Features: myPower for iPhone 4, the ultra slim rechargeable battery case for iPhone 4, lets you talk, rock, view, share, and stay connected longer. This compact battery case doubles as a dock for automatic syncing, and as a case to protect your iPhone from everyday wear and tear. eSwap technology lets you swap the battery module on the go to more than double, triple (or more) the amount of power you get with myPower for iPhone 4. Optional eSwap battery modules available in ultra slim or ultra power. Parts: 1 year limited Labor: 1 year limited