power bank Capacity:4000MAH Battery cell:polymer For:ipad,iphone,MP4/MP3,PDA PSP MID,mobile phone etc. ... Product: Power bank Specificationspower bank Capacity:4000MAH Battery cell:polymer For:ipad,iphone,MP4/MP3,PDA PSP MID,mobile phone etc ... light4,Powerful with long using time 5,Portable and convenient for outdoor products as a accessory6,Environmental protection Economic Efficiency7,Long ...