with a rolled r
If you're being super strict, that's technically what /r/ means. But in practice, it tends to just get used to mean "your rhotic consonant". That's why you'll note the same symbol is used for that part of the word in both English pronunciations and the Nauruan* pronunciation.
* do we need to update the spelling of the demonym?

Are these actually smart glasses, or just glasses with a camera in them? Because that is not the same thing. We've had glasses with cameras in them for like 20 years. They can be great for recording a ride or run, for example.