1.Portalbe backup battery for smartphone,PSP,GPS, Bluetooth 2.DUAL USB output 5V/1A with ... 3W+3W high quality speaker 1.It can be used for smartphone, tablet pc, PSP, GPS,Bluetooth, Camera and so on. Dual output ... 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 ...