Disabling turn-by-turn audio alerts on a Forerunner 165

Hi evreyone,

Is there a way to disable the turn-by-turn audio alerts on a forerunner 165 ?

When looking on internet I saw that on other models of Forerunner there's a navigation menu where you can disable this but this navigation menu doesn't exist on the forerunner 165.

And in the audio prompt menu, both in general and by activity, there's no navigation alert options so it's a bit confusing. I'm using an iPhone.

Thank you !