FS27049 for iPower Case with Built-In Rechargeable

FirstSing FS27049 iPower Case with Built-In Rechargeable Li-Ion Battery for iPhone 3G/3G S * Pass-Through USB: Charge and sync your for iPhone 3G & 3G S to iTunes without removing it from the iPower via the included USB cable * Charging: You can use the included USB cable to charge the iPower and for iPhone simultaneously or just charge the iPower. * Intelligent Power Distribution: Smart Battery Technology instructs the for iPhone to always drain out the iPower first. When you're done with the iPower, simply detach it and you still have a fully charged iPhone. * Safety First: The iPower utilizes advanced rechargeable lithium-polymer battery cell technology for added safety. Built-in circuitry prevents the iPower from shorting * LED Battery Status Indicator: The integrated LED status indicator tells you how much power is left in your iPower. Simply press the test button and it will tell you how much power is left. * Capacity : 1020mAh * Compatible: for iPhone/3G/3Gs * Max Input: 5.5V * Output: 5.0±0.2V * Cell Type: Lithium Batteries * Color: Blue inside, black outside * CE * Material:ABS+PC