Does my beat error really high?

Got this beautiful SNXS79 about a few months ago. Very pleasant to wear, and love the feel that it "works from me".

Its accuracy varies between -3 to -7 secs per day, depending how much it was worn. It has a ~2.3ms beat error also.

The accuracy is pretty good for me right out of the box. The positional accuracy of the watch is also in the limit in every defined measuring position.

But the beat error is another thing that I can't go on with.

I never saw any recommendation or limit for acceptable beat errors from any manufacturer - just opinions from 0.8 and 1.5ms that these are "the maximum".

Is 2.3ms really too much? Should I be worried about, that this will cause problem in the movement later?

Feel free to share your experiences and opinions!

Reply
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As the watch is keeping time within the movement's specs, I wouldn't sweat it. It might be worth mentioning IF you ever get the watch serviced.

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It's just that the tick is longer than the tock and they are harder to start when wound down and will need a shake. The spokes of the wheel should line up with the jewel on the pallet fork when unwound resting

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Seems a bit high, but not suprising for an older 7s26 movement. In my (limited) experience, I have seen it before. If you had it on a timegrapher I wouldn't be surprised if it had low amplitude too. Obviously keeping decent time- as a testament to a workhorse movement. It could be adjusted to run better, but if it has low amplitude it would probably be more cost effective to swap out the movement for a NH36 than pay to have the 7s26 serviced. You would also gain hacking and have winding in the swap...

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Did you use a timegrapher or the app on your phone?

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nightfury95

Did you use a timegrapher or the app on your phone?

good question!

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When i regulate, i try to get to 0.0ms, but sometimes that's really hard to do. And positional differences can occur. But even an absolute amateur can regulate it to -+0.3ms.

nightfury95

Did you use a timegrapher or the app on your phone?

Just an app... planning to find a watchmaker with a Weishi of sg. to get a more precise result.

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vintagedigitalsbychee

Just an app... planning to find a watchmaker with a Weishi of sg. to get a more precise result.

Well, they I wouldn't really be worried about the beat error as long as the watch keeps time well.

The apps tend have lot of case interference most of the times unless you pop the caseback off which gives a better reading. Also depends on how good the mic is in your phone, a earphone mic makes it easier to get a little more accurate reading especially if you are using iPhone. Plus you never know if the watch is fully wound since it lacks winding, so the readings will be different based on the power reserve level.

These old 7s26 Seiko 5 will keep good time, I never bothered to regulate them. The watch somehow keeps +/-10 seconds easily or sometimes even more accurate.

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vintagedigitalsbychee

Just an app... planning to find a watchmaker with a Weishi of sg. to get a more precise result.

A dedicated timegrapher may give a different result.

This is how my unopened SNK809 performs:

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