Well I'm in Kitzbuhel right now and it was -20 and my DSSD was ticking away perfectly but I'm sure those deep sea divers have experienced even colder conditions.
Rolex ExplorerII 216570 @ -2 deg' C.
No problem, still -1 sec' per 24 hours whatever the conditions.
Well I'm in Kitzbuhel right now and it was -20 and my DSSD was ticking away perfectly but I'm sure those deep sea divers have experienced even colder conditions.
G-shock (not mine)
Sinn Arktis, rated for -45 ;)