1. High capacity 5000mAh USB Power Bank External Battery. 2. High output up to 5V, maximum 2.1A, minimum 1A. 3. LED indicator showing percentage of power being charged 4. USB cable with 4 connectors attached for charging different devices 5. 4 connectors: Micro USB, Mini USB, for Apple 30 Pin, for Nokia 6. Allows Dual USB devices to charge at the same time 7. Super protection function: Core intelligent protection, overcharge protection, discharge protection, leakage protection. 8. High power conversion efficiency: the power conversion is as high as 90% or above, far higher than similar products. 9. Press the button while start charging devices (button is for start charging only while unplug cable for stop charging) 10. Charging via USB to computer system or power adapter. 11. Fit for: for iPad / for iPhone / for iTouch / for iPod / for GPS / for PDA / for PSP / Camera / Mobile phone(for Nokia,for Samsung,for Sony Ericsson etc) MP3/MP4 players / for USB music speaker /for Bluetooth products / for USB AA/AAA battery charger. 1 12. Long service life, more than 800 times the charging and discharging. 13. The lithium-ion polymer, long service life,more safety. 14. After 72 hours aging test, the product performance is stable. 15. The Wallet Style , look more fashion, more wear resisting.