easy to charge:chargeable for mang kinds of digital electronics products such as DV,mobile phone,MP5,MP4,MP3... *volume capacity :600mAh(3.7V) *Input parameter :voltage 5v current 1A*electric quantity display :intelligent LED key button electric quantity display*charging display:electric quantity display light flicker one by one *output voltage:USB1:standard 5V *output current:USB1:standard 1.2A, ...