How water resistant are Vostok Amphibia watches?
I've been curious about Amphibia watches for a while so I decided I would get one to play with. One of the main things that interested me was the different approach to making the case water resistant (please excuse the Hodinkie link but it explains it better than I can) https://www.hodinkee.com/articles/vostok-amphibia
I bought one of fleabay that looked in good condition but needed some movement work, so I wouldn't feel bad when I tried to destroy it in the pressure tester :devilish:
I uncased the movement because having had a quick look when it arrived I thought it would be interesting to try and repair.
The watches are marked as being 200m water resistant, and right enough I wound the tester straight up to 20 bar without any problem
http://i.imgur.com/vK00GExh.jpg
I then started to take the pressure up 5 bar at a time giving the watch a couple of minutes at each step to settle and so that I could look for any leaks.
Much to my surprise this continued up to 40 bar ! (approx. 400m) where I decided to stop as a sudden catastrophic fail at that pressure could potentially damage the pressure tester and at £5k they are not cheap to replace (yes I know I'm a coward :dejection:)
http://i.imgur.com/Yw0VWAVh.jpg
http://i.imgur.com/ZP66mxJh.jpg
I left the case sitting at 40 bar for over 15 minutes without any sign of a leak. Not bad for a cheap Russian toy :eagerness: If I remember correctly the current SCUBA world record is around 332m
http://i.imgur.com/lBUGayMh.jpg
PS I take no responsibility for anyone else's watch letting water in.