... Stone 3000 external battery for ipad / 6000mah portable power source / power source 1.3000Mah2.Input:5V-1A;Output:5V-500ma3.size:80x80x12mm ... Dual USB output, 5V 500mA and 5V 1200mA, a drag on for two at the same time charging. Can simultaneously charge the iphone ... material and durable for long time useCompatibility:Iphone, HTC,Samsung,Nokia,MOTOROLA, SONY Most mobile phone,and iPad, iPod, MP3, ...