Canon EOS R3 Advanced User's Manual page 509

4.
Play back the voice memo.
Press the <
the speaker (1).
You can adjust the sound volume by turning the <
Press the <
Note
Multiple voice memos added to an image are played back consecutively.
Added voice memos cannot be erased by themselves using the camera.
Erasing images (
/ > button to play back the voice memo through
/ > button to stop playback.
) also erases any voice memos added to the images.
509
> dial.