... :1) High capacity 20000mAh external backup battery for your iPhone 3G,3GS,4G,4GS,iPod, iPad 1, ... and mobile phones.2) Designed to provide power for your iPhone, iPad, iPod and mobile phones.3) Built ... long operation time.5) be compatible with Nokia, iPhone, iPad, MP3, MP4, and other mobile phones... ... cooperation! )Photo reference : External Battery Charger 20000mAh USB Power Bank for iPhone/ipad mini