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On the play-stop interface, long press the delete button to pop
up the following menu list: Delete file, Delete all and Exit. Below
are the pictures of the deletion operations:
On the left side of the interface, press “+” or “-” button to
select individual or all files; on the right side of the interface,
press “+” and “-” to choose “YES” to confirm deletion, “NO”
to keep file; press MENU button to execute.
You can change settings according to your preference.
On the play-stop interface, shortly press the MENU button to
pop up Functions Menu, the functions include: MIC gain, Record
type, Record lamp, Voice Activation Control, Listen In, Auto
divide. See the below related reference pictures:
6.3 Delete Files
6.4 Record Settings
play speed. See the below related reference pictures:
When playing the audio files, long press MENU button to enter
the interface of bookmark setting, shown as below. Choose “Go
to bookmark” or “Delete bookmark”, and then press MENU
button to enter the submenu interface which is shown as below:
6.2.6 Bookmark