[redpoint5]

Originally Posted by freebeard

Not watches, shoes.

hackaday.com/2019/06/04/waterproofing-the-best-watch-ever-made/

Disassemble the watch and reassemble it submerged in mineral oil and it's waterproof to 700 meters/1200PSI.

That's the trick deep divers use on their computers, especially those using rebreathers where the computers control the injection of O2.

I learned about that somewhere around when I discovered the last dive of David Shaw.

https://www.youtube.com/watch?v=PCwad5xKoyA