[phicoh]

For me, there are regularly situations that I get a message on my phone but it is not convenient to get out the phone. Looking at the watch is then quite handy. Similarly in a noisy environment I sometimes miss a notification. The buzz of the watch is nice.

Navigating with a phone always feels a clumsy. I find that also more convenient with a watch.

When it comes to heart rate, it is just convenient that the watch can constantly monitor heart rate, stress, etc. Sometimes you feel a bit off an wonder why. If HRV is suddenly lower then it might be good to avoid a hard training session.