I am a craftsman and wear the watch every day. No scratches even after months of wear. Alarms can be added via the zepp app, but are not synchronised with the mobile alarm clock.

An adapter is supplied for other straps.

is not scratch-resistant

There are also display protection foils or protective glasses that you can replace regularly.
Bracelets are a dime a dozen.
Best watch for me. The battery life is perfect. Lasts several weeks. Other watch manufacturers simply don't manage that.
The app is also much better than Garmin. One app for everything.