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