Speech recordings in *.amr format are possible.
The amr format compresses the frequency band of the speech and is designed to take up as little space as possible when saving. The sound quality therefore corresponds at best to the quality of a telephone answering machine.
The "voice recording" function is probably most suitable for composing a voice message, recording a telephone conversation or recording your own thoughts on a park bench ...

Incidentally, the *.amr format can be easily converted into the common mp3 format with the programme "VLC".

mfg

https://www.nokia.com/phones...
Here is the instruction manual where you can read about it