... function Support MP3 music format With remote control Product name: 2.0 channel computer speakerProduct model: SA-2051. Specification:Output power ... USB and SD memory card function, Support MP3 music format(2) With remote control(3) Volume, bass, treble, echo ... stage speaker, DJ speaker, speaker cone 4. Our subwoofer speaker,2.0 speaker, speaker cabinet, laptop speaker, amplifier speaker, portable mini ...