[dhritzkiv]

> its just the fact that it goes on your wrist and has an accelerometer plugged into a computer

That's incredibly underselling it as just an accelerometer, but missing the fact that it's not an off-the-shelf accelerometer and that there's a very capable computer inside it (plus an even more powerful computer in a pocket not too far away) to do the heavy data-processing required.

> If apple actually cared they would create a new device for this particular use case.

This theoretical device would have a smaller user base and would also cost an order of magnitude more. The magic of the Apple Watch is that it's a fairly inexpensive (and hence accessible) multi-purpose personal device used by millions.