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