Recharges iPhone battery doubling your power giving you freedom to use your iPhone longer. Soft touch finish - feel the finish through window in the packaging. Lightweight design Lithium ion 2000 mAh battery ON-OFF switch to reserve extra power when not in use Battery Status indicator LEDs built into back - check remaining power with the press of a button. Comes with Micro USB cable for charging the IS716 Compatibility: iPhone 3G and iPhone 3GS-+