[nradov]

The ANT+ Extended Display profile would be a good fit here. I don't know whether this product supports it.

https://www.thisisant.com/news/new-extended-display-profile-...

[ho_schi]

Thanks! And even more interesting, there is Varia Vision: https://www.garmin.com/de-DE/p/530536

How I could missed that. It not a glass but an clip to add.