... for your iPhone, iPad, iPod and mobile phones.3) Built-in 20000mAh high capacity rechargeable Li-Polymer battery .4) 20000mAh capability, powerful with ... operation time.5) be compatible with Nokia, iPhone, iPad, MP3, MP4, and other mobile phones...6) the USB output, more convenient.7) ... long term cooperation! )Photo reference : External Battery Charger 20000mAh USB Power Bank for iPhone/ipad mini