Have seen that this is a feature of the new units, arguably lower in the range then FR245/245M, Connect already has the hydration feature in it, will the widget be coming to FR245/245M?
I have a FR245M also, but it always says "it's not a compatible device". Even though the 245M is listed as compatible on the widget page. The hydration widget doesn't show up when searching IQ Connect store on my mobile either, which lists my device as 245M.
Hmmm... strange. I got there by picking "get more widgets" on my phone and it queued/downloaded right away from IQ.
I just got mine last week and I notice that it lists the software version as "188.8.131.52" in my Garmin Connect activity pages.
I only see 3.77 as the beta version available on the website. Maybe that's the difference?