Apple’s Ultra watches have up to 36 hours / up to 72 hours in low-power mode- but they are more than I would spend want to spend on a smartwatch ($799).

Have a look at Fossil then. I'm wearing one and it's nice. Still has a mechanical watchface so it does not look like a smartwatch, but it got some features. I've turned notifications on only for messages, mails and calls, not for every other app. Runtime is great, like a week or more, depending on use, and it still does heart rate monitoring and step counting.

I’ll drop ruggedpcreview.com here- no affiliation but have checked once in a while for years; they have a lot of press releases, if not reviews, of the rugged PCs available.

I am considering something like that, and noticed some enterprise / data center SSD makers do not publish firmware updates. Checking as I type this: Kioxia seems to only have consumer SSD firmware/tools/binaries. Micron has a list of firmware downloads for their drives. Samsung seems to have only consumer SSD firmware/tools, except for SM/PM863. Solidigm has a comprehensive status and download page for their drive firmware, including all(?) previously-Intel drives. Western Digital seems to only have consumer drive firmware available without a support ticket.

I am discounting whether email support could provide firmware, as I believe firmware updates should be as easy to access as possible (and have read forum posts describing the issues encountered when trying and usually failing to request via support channels). - If I missed something, please post it, would be good to know.