On Wear OS, the Google Clock app can power alarms, timers, and stopwatches. That’s a standard set of features on any smartwatch, which is why every smartwatch has its own app for exactly that ...
As part of the upcoming M3 Expressive redesign, Google Clock for Wear OS has new app icons for Alarm, Stopwatch, and Timer.
I set up my NTP server on Ubuntu and OPNsense for accurate time synchronization across all devices on my local network.