Spec.:
1. Battery Type: Li-polymer 583759PL battery
2. Capacity: 2800mAh/10.4Wh
3. Input:  Mini USB 5V/500mA
4. Output: USB 5V 500mA
5. Dimension:65*64*17mm


Features:
1)2 Blue LEDs indicates the Cap,
2)Press the Button to show the power;
3)2 LEDs turn on one by one when it is charged.