Case-mate Apple iPhone External battery & Case 3G/3GS 850mAh 2in1

Technical Details Slim design and profile / Weighs less than 1.84 oz. Battery capacity up to 850 mA / Power on/off button and LED lights to indicate charge levels make for optimal efficiency Completely encases and protects the iPhone 3G / 3GS, including corners / Includes micro-usb cable to charge and sync Access to all ports and controls * Talk Time: Up to 2 additional hours beyond standard iPhone battery life * Internet Use: Up to 2 additional hours beyond standard iPhone battery life * Video Playback: Up to 2.5 additional hours beyond standard iPhone battery life * Audio Playback: Up to 5 additional hours beyond standard iPhone battery life * Standby Time: Up to 100 additional hours beyond standard iPhone battery life Product details Product Dimensions: 1.8 x 11.9 x 6.6 cm ; 91 g Boxed-product Weight: 454 g Manufacturer warranty: 12 months