The PhoneSuit Elite Battery case gives you portable power on demand in a slim, protective case for your iPhone. It features a high capacity 2100 mAh battery that can provide a full, complete charge to the iPhone 4. Quick charge technology delivers this power at an incredibly fast (5 Watt/1 Amp) output speed charging the iPhone in 2 hours. The PhoneSuit Elite will extend the battery life of your iPhone by more than doubling its energy capacity. You can now experience up to two days or more of uninterrupted iPhone power. Enjoy extended iPhone usage times for voice, music, video, games and iPhone apps. It?s the perfect blend of power, protection and style. With PhoneSuit, you can have portable iPhone power anytime you need it!