Rechargeable batery case for iphone 3G/3GS

Rechargeable batery case for iphone 3G/3GSDescription:The world thinnest rechargeable battery case for iPhone 3G & iPhone 3GS now comes in RED! Now available, the juice pack air?is designed to virtually double the time you have to Rock, Talk, Surf and Send with your iPhone 3G or 3GS. The juice pack air?is a rechargeable external battery concealed inside of a protective form-fitting case for the iPhone 3G & iPhone 3GS. It offers you the full protection of a hard-shell case while providing virtually twice the battery life of the iPhone alone; all in an ultra-thin, light-weight, low-profile design.Features:Virtually double your power! Whether you out of juice or just want to practically double your battery life, plug in your juice pack air?and virtually double your time to rock, talk, surf and send.Choice! Now you can choose the color that matches your iPhone 3G & 3GS or your style. Battery and Case in One Offers the convenience of an extended battery and the full protection of a hard case. Use it as a case all the time or just when your iPhone needs an extra boost.On/Off Switch Use the juice pack air?when you need it. The built-in on/off switch allows you to use the juice pack air?just as a case or as a battery at the flick of a switch.Pass-through USB Charge and sync your iPhone to iTunes without removing it from the juice pack air? Intelligent Power Distribution Smart Battery Technology instructs the iPhone to always drain out the juice pack air?first. When the juice pack air?has been full drained, you still have a fully charged iPhone. Powerful and Safe Battery Cell Built in overcharge, short-circuit and temperature protection. Latest in lithium polymer battery technology offers the most power and thinnest and lightest form factor. Light LED Battery Status Indicator The integrated LED status indicator tells you exactly how much juice is left in your juice pack air? 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. Charging You can use the included USB cable to charge the juice pack air?and iPhone simultaneously or charge the juice pack air?on its own.iPhone 3GS: Standby Time: Up to 270 hoursTalk Time: Up to 4.5 hours on 3G | Up to 10 hours on 2GInternet Use: Up to 4.5 hours on 3G | Up to 8 hours on Wi-FiAudio Playback: Up to 27 hoursVideo Playback: Up to 9 hoursiPhone 3G:Standby Time: Up to 270 hoursTalk Time: Up to 4.5 hours on 3G | Up to 9 hours on 2GInternet Use: Up to 4.5 hours on 3G | Up to 5.4 hours on Wi-FiAudio Playback: Up to 20 hoursVideo Playback: Up to 6 hoursOther product specifications are as follows:Product Dimensions: 4.90 in x 2.59 in x 0.75 in; 2.66 ozBattery Capacity: 1200 mAhEstimated Shipping Weight: 1 lbsProduct Category: Cell Phone External BatteryProduct Compatibility: iPhone 3G and iPhone 3GSPackage Content Included: juice pack air?/span>, USB-micro cable, User Manual