I wonder if it is possible to use the apple watch in high altitude (low pressure) or space. Watches for pilots therefore have the ability to keep their glasses fixed to the body of the watch - waterproof watches always had the risk of their glasses popping of when the outside pressure dropped. No pilot or astronaut wanted to have flying debris of a popped watch flying around in a plane or spaceship. This is one of the reasons NASA tested the watches and went for a official watch with a plastic watch glas on the official Speedmaster Professional. Obviously there have been other watches in space (Rolex GMT) but their watch glasses are fixed to the watchcase. As far as I know the watchglas of the Apple watch is just pressed into the watchcase... Is it possible to use it in High Altitude /low pressure environment? Tbh I think the apple watch could be a big contribution for space missions because a wrist worn computer seems to be useable for uncountable uses. Of course I do know, that it should be usable inside the ISS because it is pressureized. What do you think - will we see an apple watch on the ISS in the near future?