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not clear what they actually are
MIL-STD-810G according to
https://psref.lenovo.com/syspool/Sys/PDF/ThinkPad/ThinkPad_X280/ThinkPad_X280_Spec.PDFMy work phone claims the same, main thing relevant to home gamers is ingress protection and drop testing, which IIRC is 1.2m drop onto 12mm ply backed by concrete, or 1.5m with the stock protective case.
As with so-called "aerospace grade" materials in bike parts, the claims are indicative of some things but not all the things the marketing department wants you to associate with those terms 🙂
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Went for this:
https://www.ebay.co.uk/itm/295508085529
1yr guarantee on components and £150 - cosmetically probably a bit ropier than the one you posted, hopefully I haven't missed any small but important differences!
Lol good shout on windows upgrade!
It’s literally a laptop just for my wife to use while teaching in a primary school so it doesn’t need a mad processor or anything. Just be be robust enough to survive!