Power Juice Pack iPhone 3G 3Gs Rechargeable Battery Case for iPhone 3Gs & 3G -1900mAh, Black Power Juice Pack extends the battery life for your iPhone 3G a Sleek, Low-Profile design! Battery life is 2x your battery! Well-Designed Sleek Fit and Easy To Use, makes running out of power close to impossible! The rechargeable power juice pack slides on to the back of your iphone with easy and acts as a case too! It holsters your iPhone securely in a rubberized finish for a Non-Slip grip! This is an essential accessory for every iPhone user an ideal power solution for recreation or business activities. Anytime you are on-the-go, have peace of mind that you won't be left without battery power. Perfect in urgent and emergency situations. Invest in a product that will never let you down when you need it the most. Power Juice Pack iPhone 3G 3Gs Rechargeable Battery Case for iPhone 3Gs & 3G -1900mAh, Black features Smart battery Non slip comfort grip Sleek design conformed to the shape of the iphone 3G Includes: Micro USB Charge cable Talk Time: Up to additional 6hrs (3G Network), Up to additional 12hrs (2G Network) Internet Usage: Up to additional 6hours (3G), Up to additional 7hours (Wi-Fi) Audio Playback: up to 28hrs Video Playback: up to 8hrs Standby time: up to 380hrs Color: Black **Phone or Device, if pictured; is NOT INCLUDED, this is an accessory compatible with your device Specifications: Weight: 66.5g Capacity: 1900mAh Li-Polymer battery Dimensions: 113 x 66 x 21mm Power Juice Pack iPhone 3G 3Gs Rechargeable Battery Case for iPhone 3Gs & 3G -1900mAh, Black