... repeat,mode Decoder Board with FM radio for SD card,usbFunction and features: SD ... button, remote controlSpecificationsVoltage5VFM frequency range88MHz-108MHzFunctionFM radio, memory functionPackageBoard Size108*25mmAccessoriesRemote control1Sound cableOptionPower ... audio volume-Application: Ordinary audio combination, Car audio, multimedia speaker, subwoofer, amplifier, ... with FM radio for SD card,usb