I just want the extra (vs non-Ultras) button THAT'S ALREADY THERE to allow mapping to "lap". Blew my mind that wasn't possible when I went to try one at the apple store.
Not that I could find in settings... the settings menu let me start a workout but that was all I saw. Maybe it just wasn't discoverable... Just looked at the online user manual and the only mention of lap control is in the stopwatch app (not workouts). It does mention secondary actions, but doesn't elaborate... if that actually does control the lap, Apple really sucks at doc.
:shrug:
Plus, I really want a mini version. The Ultra is MASSIVE to the point it's ridiculous.