1.Portalbe backup battery for smartphone,PSP,GPS, Bluetooth 2.DUAL USB output 5V ... It can be used for smartphone, tablet pc, PSP, GPS,Bluetooth, Camera and so on. Dual output port portable backup battery. It has two ... DC5V/1000mA suitable for smartphone Capacity: 6000mAhVolume: 3W+3WSpeaker: 4OM+4OM3.Accessories 6000 mAh Portable backup battery with speaker for smartphone,tablet pc,ipad ,digital camera ...