Ordnance Survey Maps - What's the Difference?

There's aa' certain type of map called an ordnance survey map, which is like the gold standard of of mapping in the u.K. And as far as i know, thereis no wrist mounted version of that map. You can get it on an eyphone, but you or paper maps, but you can't get it on a wrist watch. I just raise my wrist, tap, tap on the screen, and there's a map right there,. exactly centred to precisely where i am. They have some maps, but they don't have these kind of mapsand they're not going to have em on a gorgeous edge to edge, full color, 60 herts