... audio 12v/5v/6v 5.Oem 12v stereo USB SD FM IR AUX mp3 speaker module The module ... for USB and SD card absolute Power Amplifier,and stereo FM radio (87.5—108MHZ)onto multimedia Products and ... and SD cards transform each other, AUX input, FM . Lasting press for 3 secondsRemote controller function1, MODE ... PLAY/PAUSE,Play/pause function, Auto search function in FM mode. 5, VOL-,Turn down volume 6, VOL ...