@DonTomGot Excellent, I think I understand why I’d want to use this now

@bubuche There is a grade lag at the start of a descent due to smoothing. So the calculation uses the previous flat section (0% grade) until the smoothing catches up. And even then you might be at -8% but the calculation uses for ex. -2%. At this speed, you are going above the assumed terminal velocity (which is too low), and get high power spikes, Without a cadence sensor, I could zero the power when going downhill and avoid these short spikes. So replace a false positive (what you see) with a false negative. I guess the false positive is the worse issue since it impacts NP, averages, etc. So this needs fixing, but without breaking other cases. I’ll have a think.

@sky-runner For me, ZoneSense matches my breathing quite well. I’ve been using it almost every day for over one years.

@Calando Why is a chest strap necessary? Beat-by-beat data: ZoneSense uses a proprietary physiological algorithm (DDFA) that analyzes Heart Rate Variability (HRV) to determine stress and intensity levels. Optical limitations: Optical sensors (OHR) cannot reliably measure RR intervals (the exact time between heartbeats) while you are in motion. They are only accurate for this metric when you are at complete rest, such as during sleep. When pairing a chest strap, your watch will automatically disable the optical wrist monitor to ensure the data source provides the necessary accuracy for functionality.

@Marcelo-Mönch ditto!

@Ldive Thanks for your response. It happened to me this morning again… Not a very good feeling getting this message at 33 Meters. I red somewhere in the Suunto POD manuals that LED Flashlights interfere with the tank POD. I had my two OrcaTorches with me to try them out for my upcoming holiday, Same config as I had my first Mandatory Gass Time message in the beginning of the dive. I also noticed switching back from my Compass view to the air screen that it took the Nautic several Seconds to display the Air Pressure in the screen 5 - 10 Seconds (Tank Pressure --, and Gas Time --) 2 to 3 times same behaviour. I have the strong feeling it has to do with my two new flashlights as one of them was also with me the first time this happened. I dived from there with my other flashlights (SEAC I50) where for several months nothing happened… This is just my feeling so I might bee completely wrong. .[image: 1782644284386-74756467-a82d-4d28-be67-86c31f2d8d72-image.jpeg]

@ccrhenrik Ocean 2 Titanium based on Race 2 would be awesome! Unfortunately no idea if it will ever come…

2.13 (2026-06-27) is live with a small bugfix: Each trend line now scales to its own movement, so a chart looks the same whether you view it in the combined drift view or in its own dedicated view. Fixed the effort direction for speed-based sports (such as hiking): moving faster than your average now correctly reads AHEAD instead of FADE (and correct green/red colors).

@Kraisun-Tunta said: To verify whether it was a real battery drain or just a reporting issue, I performed a soft reset. After the reboot, the battery level jumped back to 99%. I’ve reported this quite some time ago, as I’m experiencing exactly the same with my Vertical 2. Never got a feedback, so I simply soft reset the watch after every full charge and that’s just it Battery life in general is pretty good though, so nothing to complain in that regard

@Nelson-Diogo I have been using the watch since last October. And that happened for the first time. I will follow what happens next. But in the time since I’ve had Suunto, I’ve realized that anything can be expected.