1. Protective case with built- in battery.
2. Smart LED power indicator.
3. Non-slip grip design.
4. Extend iPhone battery life.
5. Standby time up to 270 extra hours.
6. Music time up to 20 extra hours.
7. Talk time up to 4.5 extra hours.
8. Video time up to 6 extra hours.
9. Internet time up to 4.5 extra hours.
10. Environment friendly - rechargeable.
11. Compatible with iPhone 3G/3GS.
1. Battery cell: lithium polymer. 2. Power capacity: 1200 mAh / 5V. 3. Rated input: DC 5V / 500 mA. 4. Rated output: DC 5V, max 500 mA. 5. Dimensions: 5.1"L x 2.8"W x 0.9"H. 6. Weight: 60g.