Note: when inserting SD card recording, audio file will be saved in the SD card.
Select "Record" button recording, recording is completed, select "Stop" button. At
this point you can select the "Play" button plays the sound just recorded. Select
"Use this record" button, save the recording, this can be found in the SD card in the
appropriate recording documentation; If you do not save, you can select the
"Discard" button.
