@sartoric yes I am aware how target zones work and use whenever I can, but right now they are pretty much useless if you want structured workouts and can only do simple repeated on/off intervals at same levels. I am talking about being notified of what zone you are in during workouts … something like 5 beeps or vibrations for zone 5, 4 for zone 4 and so on.
For a use case take an example of a very simple cycling interval workout:
3 min warm-up
3 x (3 min at tempo 70-80% FTP @ 90 rpm / 5 min at sweet-spot 80-95% FTP @ 60 rpm)
4 x (2 min at tempo 70-80% FTP @ 90 rpm / 1 min full 100% FTP @ 60 rpm)
3 min cool-down
(FTP = functional threshold power)
This is the type of thing we still can’t set up on the watch to follow and would be quite dangerous to do outside without the audio/vibration feedback from the watch just to check on the screen which power zone you are actually in. This is just one of many examples.
Also this is handy for HR zones when climbing on a bike so you don’t overshoot and blow out as we say - there are always sections on a course you know you can push full gas because there is a mellow section afterwards to recover and know what zone to stay in to recover for the next push … a lot of zone jumping so a simple “target zone warning” won’t cut it. Constantly looking down at the watch on the handlebars is often times dangerous.
But yes, I get it … not many people use this and it is not main stream enough to implement, even tho other companies do it.