AUX-IN jack for the connection of external audio
sources,
Button to flip down the operating panel
Display
Bluetooth activity indicator
DIS/REC button: Button to record and erase tracks
on SD/MMC/USB storage media.
MODE button for the source selection between
radio, CD (if inserted), memory card (if inserted),
USB (if connected) and AUX-IN
IR sensor (infrared sensor for the remote control)
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