Motorcycle Navi only with headphones? Is there something like that?

Servus, I’m looking for nem Motorradnavi, just because I have a supermoto and a big part of the handlebar would look as stupid as possible, did I think maybe there are some that you can put in the bag and listen to the instructions via headphones. So without the big screen, just one for operation or maybe an app that allows me to use the mobile phone? Just ride with someone who has a Navi on the handlebar, and the tracks that found the part were really sc hön, I would never have found it like that ^^ has anyone ever heard of such a thing?