Specification：
1. Input: DC 5V 1A
2. Output: 5V 1A，5V 2.1A ≥44wh
3. Built-in battery capacities: 3.7V/15000mAh 55.5wh
4. Battery Type: Lithium Battery
5. Charge retention: >5000hrs
6. Cycle life of charging: 500 times (1 time = from 0% to 100%)
7. Net Weight: 342g
8. Size: 147*72*23mm

Features:
1. Dual USB output.
2. Built in LED flashlight.
3. It take 12-14 hours to fully recharge when power bank batetry 0%.
4. Compatible for any phone， tablet， MP3， MP4， PSP， GPS， game device， camera and many more (just connect with your USB cable).
5. LED display (display battery percentage， in / out charging status)
6. Intelligent voltage recognition chip automatically detects the voltage.
7. Built in battery protection IC to prevent over charging， over discharging and short circuit.

1x User manual