Hi everyone, longtime lurker here, I appreciate the education you all continue to give me. I hope you and families/friends are all staying safe.
I have a question about my Tudor BB GMT, purchased in July 2019. Since the very beginning it has run perfectly, around -0.1spd, at worst once registering at -1.2spd (just occasional tracking with iOS app WatchTracker). A true joy to me. It's run so well that I didn't bother tracking it for months now, but in the last few weeks, even at a glance, I could tell it was way off the MacOS and iOS atomic clocks. Started tracking it again: having reset to atomic time, in the last 3 days it's been averaging a surprising -11.9spd. Even just over four hours yesterday it lost 5 seconds. Any ideas about what's going on?
Such a big deviation made me think about what might have changed recently. No bumps or knocks at all, I'm mostly working at my desk every day. I treat this watch very carefully: it has no scratches at all. I've pretty much worn it every day since buying it, although about a week + half ago, I didn't wear it for just over 24hrs and it wound down. Power reserve doesn't seem to get anywhere near 72hrs for me. (That's maybe a secondary question I have: am I just not active enough each day to get it to the max 72hr PR?) It was after winding and starting it up again that I noticed the loss in accuracy.
Other recent change: bought a Wolf watch roll case (Blake), to also house my JDM Automatic Seiko (SARY055) and my vintage Quartz Seiko SQ 4004. Previously I always stored the GMT dial up on its own in a red Omega travel watch case (the kind with black foam inside that Omega uses for repairs: oddly the AD I bought my Tudor from gave it to me for storage of the new watch as I was travelling at the time). It's also usually dial up in the Wolf roll, but given the roll, the dial might have been facing more forward or backward than straight upright in the Omega case.
As you can see, grasping at straws to think what might have affected the watch. I thought of magnetisation (but would usually be more dramatic, and more likely make the watch fast, not slow, from what I've read?). I wondered if being housed near the Quartz watch with its battery might have done something? (In the Wolf I store them Seiko Quartz | Seiko Automatic | Tudor GMT).
Eager to hear, and grateful for, any thoughts as to what might be going on. Obviously can't stop by a local AD to have them check it right now. Sorry for my long-winded post here!