Specification? 1. Input: Micro USB/DC 5V/1A 2. Two Output: DC5V 2.0A/1A 3. Built-in battery capacities: 3.7V/10000mAh 37WH 4. Battery Type: Li-polymer battery 5. Fully Charge: 8-14 hours 6. Working Temperature? -10°C to 45°C 7. Cycle life of charging: 500 times (1 time = from 0% to 100%) 8.Size: 127*70*16mm Features: 1. New series LED display. 2. TWO USB output. 3. Use lithium polymer battery make power bank thinnest. 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.