c) After selecting the desired serial number of your favorite song, press the button toconfirm and search.You want to listen to the 123th song.- Rotate the knob to select the “1” on the ones place, 2 seconds later, the “1" will skip totens place.- Then rotate the knob to select the “2” on the ones place, 2 seonds later, the “1" on thetens place will skip to hundreds place, and the “2” on the ones place will skip to tens place.- Rotate the knob to select the “3” on the ones place.- Finally press the button to search and play the 123th song.This car radio has an external auxiliary input jack, it is compatible with audio output from anMP3 music player.So you can listen to sounds and music from external devices, if you have plugged such aplayer into the AUX IN jack with a audio cable. Press the button to switch to the AUXinput mode on or off.SELeg.:VOLVOLVOLSELMODEThe track will be played immediately when the number is matched.USB / CARD OPERATION (CONT.)AUXILIARY INPUT OPERATION9PTYXM-RSU254BT BluetoothB