@raven that chart is clearly off. HRM Dual has no running dynamics nor stand-alone activity monitoring and isn’t made for swimming… HRM-SWIM, PRO and PRO-PLUS has no detachable module…

I think that the algorithm that changes from baro to alti mode automatically is not doing its job good enough. I have no way of knowing this for sure, but my guess is that it’s not the same algorithm that is used in other watches. I had much better results outside of activity with Suunto 9 Peak, Suunto 9 baro and ambit3 peak. I wear my Race 24/7 and almost every morning I see altitude almost 50m more than the night before. During the activity, it’s very good, altitude is mostly spot on, but I have also seen crazy ascent values (like more than 50% more) few times (but that is not so uncommon with Suunto watches I guess).

@aiv4r thanks. I will try.

@Inge-Nallsson hi Inge, thanks for your help. I only use an original textile strap bought on the website of suunto compatible with the watch. It seems to me that the plastic is not strong enough and a stronger wrist movement can release the pin from the holes.

@FlickM you can’t end a route while having map on the screen, that’s correct. Just switch to next data screen and end it. It’s nothing to worry about.

@isazi I started the activity in a different mode, nothing helps, are these update errors? For some reason, I have all the user mode, I can’t change to Performance mode

@2b2bff I have a similar problem using Suunto app on iPhone and iPad. On the iPhone, which is paired to my Suunto Race S, here’s last night’s sleep data (6:59, with 7:30 goal): [image: 1744488400619-a43ca1f8-2c00-408b-8d61-a1a1f11d97e9-image.png] On the iPad, it does not have the whole data, and the goal is the original eight hours (which I changed on the watch): [image: 1744488492554-d91c186d-a082-4c32-91c7-31789c35e680-image.png] My hypothesis is if I unlinked the watch from iPhone and linked to the iPad, then the data would be corrected. That would be annoying to switch back and forth daily though. For now I’m just leaving it alone. Other data seems to get synced well between the two but for some reason not sleep.

@isazi That would be great!

@timecode I think all latest Suunto watches have 22mm straps

Hi Does anyone have the same GPS open water record problem?