You can see the dimensions in the full spec table on the preorder page
Oh great, I missed that end of the page. The "Round 2 details" links back to the blog and it is hard to see the FAQ on mobile (needs manual scrolling to the end).
Google search and Perplexity failed when I tried, too. Google search has caught up now (haven't retried Perplexity)
A 41.5mm diameter sounds good. That's a whopping 10mm/20% smaller than my current watch. Should be really neat given the thickness.
Yes, the slimness and ability to dress up are certainly huge selling points. It does look about 1/4 thinner than the PT2, which is presumably much thinner/smaller than your fennix.
Honestly, even with a PT2 on order, I would consider getting one of these for the occasions (1x/wk?) where I am wearing a dress shirt or otherwise want to look a little more dressed up. It honestly would probably also be a nice conversation starter because you can set it up with a traditional watchface, but then when you get a notification it would obviously not be a traditional watch. And it's so much thinner than Google/Samsung and other round smartwatches, it wouldn't be confused with those.
That said: I can't find full dimensions for the new round 2. I can guesstimate that it should be 10-20% smaller in diameter and less than 2/3 the thickness.
Would you mind sharing full dimensions or even update the post?
And congratulations! I really like this. I hope there will be enough of a market to support this project long term.