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Discussion Starter · #1 ·
My SUB600 T-GRAPH is about a week old, from the factory, and it gains 10-11 sec/day. Is this what should be expected?:think:
 

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Well, it's outside COSC spec, but then again, it's not a COSC watch. (COSC spec is +6/-4 sec/day).

But it is new (correct?) If so, many new watches will settle over time (one to six months, yes six is extreme, but I have personally seen it). On top of that, the settling most often slows the watch, it is less likely to speed up. In addition, some watches do not settle at all, and keep the same time as from new!

Now the really good news. The watch you have is certainly capable of being regulated to much more correct time deviation than +10/11 sec/day. I'd let it settle in for a month or two first if it were me, or you may end up slow and want to re-regulate it (a fast running watch is more desirable than a slow running watch, as to correct the fast watch, all that is needed is to hack the watch until the correct time "catches up".

BTW, more important to judge the watches time keeping ability is the amount of deviation per day. The more consistent this is, the more accurate the watch. Getting the correct amount of +or- per day is simply a matter of regulation.
 

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I tend to feel that +10 is near the high end of the "normal" range for a premium non-cosc watch. My T-Graph pro also runs about +10 and when I questioned Doxa about it, their response was that it will settle in over the next year and become very accurate. In their words, +10 is perfect for a new watch. Anything less will run slow in a few years. I'm not sure I'm buying that one.

I have a couple other watches under a year old that run +8 or 10 a day. I don't worry too much about it and most manufacturers will consider that within spec for non-cosc and will therefore not adjust it under warranty.

Enjoy your watch, it is fine and within the normal range.
 

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While your current deviation is acceptable, I'll get a good watchmaker to regulate it as a watch gaining 10s daily would annoy me to no end. As it's consistently gaining 10 to 11s a day, the movement is really precise, with specific deviation of about 1s/day or less, so any competent watchmaker can adjust the gain back to zero, and if done properly with a bit of luck one would end up with a watch doing +-0.5s/day.

I found that you may need 2 or 3 adjustments over a few days to achieve this & it's necessary to be good friends with a good watchmaker in our line of hobby. Good luck
 

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I agree with most of the others.
My T-Graph, which I bought NOS about a month and a half ago, started out about the same as yours. It was 10 - 12 sec/day fast.
After about 4-6 weeks it is now down to about +5 sec/day.
I would forget about checking it for a month or so and then check it.
I don't know if it is any different with the chrono running though.
Beautiful watch, enjoy it.
They are just now starting to show their true value.

Bill
 

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Discussion Starter · #6 ·
Thanks to all, good info and my mind is at ease now:-!
 

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My new 750T Pro is at +10 every day since I got it last week. Exactly +10 though so I hope it settles down a little bit as +10 is a little much over the long haul. Still love the watch though! b-)
 

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My new 750T Pro is at +10 every day since I got it last week. Exactly +10 though so I hope it settles down a little bit as +10 is a little much over the long haul. Still love the watch though! b-)
Give yours at least 2-3 months. If it doesn't settle, you can have it regulated closer (Breitling service normally tries for around +3 sec/day when they regulate theirs, giving them a bit of room and also allowing for a bit of deviation, a correct amount IMHO).
 
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