Double the battery life of your iPhone 3G, 3G S, and iPod Touch with the Opteka Rechargeable Battery Power Pack, a rechargeable lithium polymer battery in the form of a non-slip, soft-grip rubberized case.

Highlights
-Double the battery life with this 1900mAh extended battery pack/case combo
-On/Off safety switch
-Standby Time: Up to 350 hours
-Talk Time: Up to 6 hours
-Internet Use: Up to 7 hours
-Audio Playback: Up to 28 hours
-Video Playback: Up to 8 hours

Features
-Pass-Through USB: Charge and sync your iPhone 3G, 3G S, and iPod Touch to iTunes without removing it from the power pack via the included USB cable

-Charging: You can use the included USB cable to charge the power pack and iPhone simultaneously or just charge the power pack.

-Safety First: The power pack utilizes advanced rechargeable lithium-polymer battery cell technology for added safety. Built-in circuitry prevents the power pack from shorting, over-charging or malfunctioning even under the most extreme conditions.

-LED Battery Status Indicator: The integrated 4-light LED status indicator tells you how much power is left in your power pack. Simply press the test button and it will tell you how much power is left. The LED lights also indicate the charging status and charging progress.

Specifications
-Dimensions: 2.5 x 4.75 x 0.75 inches
-Weight: 3 ounces
-Compatibility: iPhone 3G, 3G S, and iPod Touch

In the box
-Opteka Rechargeable Battery Power Pack, USB mini cable, user manual