[jraph]

I bet longevity is not a specific trait of expensive watches. I think most non-smart watches can live for very long.

[lucideer]

Expensive watches are often considered "heirlooms": I'd say trans-generational longevity is a reasonably high expectation for most tech.

[ghaff]

>I think most non-smart watches can live for very long.

Other than batteries and watchbands (and physical damage), yes, but that's because the functionality generally doesn't change--they tell the time and don't need to interact with any other devices or software.