1.Portalbe backup battery for smartphone,PSP,GPS, Bluetooth 2.DUAL ... used for smartphone, tablet pc, PSP, GPS,Bluetooth, Camera and so on. Dual output port portable backup battery. ... phone as a speaker and also be used for flashlight.2. Reference dataInput:MICRO USBInput Votage: ... 4OM+4OM3.Accessories 6000 mAh Portable backup battery with speaker for smartphone,tablet pc,ipad ,digital camera etc