... 3.1 Speaker3.1 Ailiang speaker3.1 Amplifier speaker3.1 DC 12V audio speaker3.1 Radio speakerSpecificationBrand: AiliangModel No.: USBFM-031Function ... : USB,SD,FM,Full function remote.Power: 30W+10W*3Voltage: DC 12V, AC 220V~Driver unit: 8"+3"*3Pakage1.packing: 1 ... . Guangzhou 2012 Ailiang Digital Hot Sale 3.1 Speaker with DC 12V (USBFM-031)