tl;dr:
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an FCC filing suggests that there will be 4 strap materials referred to as “plastic active strap”, “metal mesh strap”, “metal link strap” and “metal slim strap”;
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there’s no mention of UWB in the filing.
As a reminder, these were the latest leaks we had before: https://lemmy.world/post/2715637
I mean at the same time it came out less than a year ago, I’d stick with it for a few years too 😁