Not sure it that's what you're getting at, but yeah, leave out the watch part. In fact just lose the screen, I don't need or want it.

All I want is a "fitness band" that will track heart rate, sleep patterns, what ever you can stuff in there and just sync it all to HealtKit next time it's in Bluetooth range of my phone. If I go for a run I want the tracking, but not the connectivity and I certainly never want to know the time.