The PhoneSuit Elite Battery Case for iPhone 4 and iPhone 4S The PhoneSuit Elite 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 less than 2 hours. The PhoneSuit Elite will extend the battery life of your iPhone by more than doubling its energy capacity in a thin 17mm (0.67 in) design. 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 business applications. It's the perfect blend of power, protection and style. It's the perfect iPhone 4 accessory! Truly Double Your iPhone's Power The PhoneSuit Elite can provide over a full 100% charge to an iPhone 4, truly doubling the iPhone battery life. Quick Charge Technology The PhoneSuit iPhone battery case incorporates high speed (1 Amp / 5 Watt) charging technology. It provides twice the industry standard power output charging an iPhone 4 fully in less than 2 hours. Charge & Sync with iTunes You can Sync your iPhone with iTunes while its attached to the PhoneSuit Elite. Charge the PhoneSuit battery, iPhone and sync all at the same time. Use the included Micro-USB cable and connect to the USB port of the computer to which you wish to use with iTunes. Charging the PhoneSuit Elite Battery Case Charging the PhoneSuit's battery is simple. You have the choice of charging the PhoneSuit and iPhone together for daily use or charging the PhoneSuit separately for use when needed. Just use the included Micro-USB cable to charge via most standard computer USB ports or USB outlet chargers. To charge the PhoneSuit and iPhone battery faster, you can use a high output (1 Amp / 5 Watt) USB charger such as the original Apple iPhone 4 USB wall charger.