- Hard case with built-in power battery; the iPhone is connected with the batteryvia the interface in the hard case- Talk time: provides you with 7 hours of additional talk time- Internet: provides you an additional 7 hours of Internet use- Video playback: up to 8 additional hours possible- Audio playback: up to 24 additional hours possible- Standby: provides you with 250 hours of additional standby time- On/off button for user-oriented handling and efficient use- Rechargeable by means of USB cable (included)Technical Details:- Model: Li-Ion Standard- Weight: 69 g- Capacity: 2000 mAh- Colour: Black