High Accuracy Quartz watches Archives - RK Watch Service https://rkwatchservice.com/tag/high-accuracy-quartz-watches/ Watch Repair & Restoration Service Fri, 10 Oct 2025 08:45:42 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://rkwatchservice.com/wp-content/uploads/2024/03/cropped-RK-Watch-Service-Logo-Chicago-Watch-Repair-Web-32x32.png High Accuracy Quartz watches Archives - RK Watch Service https://rkwatchservice.com/tag/high-accuracy-quartz-watches/ 32 32 Greiner Quartz-Timer C : the 8.64 Mhz beast from the past ! https://rkwatchservice.com/greiner-quartz-timer-c-the-8-64-mhz-beast-from-the-past/ Mon, 06 Oct 2025 06:22:49 +0000 https://www.watchuseek.com/threads/greiner-quartz-timer-c-the-8-64-mhz-beast-from-the-past.5645247/ Watch Repair & Restoration Services in Northbrook & North Chicago Suburbs. Contact us for a free estimate at 224-213-7371. Learn more from our news blog.
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webvan

HAQ nuts need to check the accuracy of their watches and there are different ways of course, as detailed in the dedicated topic (163) Methods of Determining the Accuracy of a Watch | WatchUSeek Watch Forums , the Naked-Eye Method, the Stopwatch Method,...

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webvan

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HAQ nuts need to check the accuracy of their watches and there are different ways of course, as detailed in the dedicated topic (163) Methods of Determining the Accuracy of a Watch | WatchUSeek Watch Forums , the Naked-Eye Method, the Stopwatch Method, the Video Method, but these take effort and time so the ideal solution would be to use a timing machine. Several have been discussed over…

Greiner Quartz-Timer C : the 8.64 Mhz beast from the past !

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Comparison of the error rates at different temperatures for 9F62 (10SPY), 9F85 (5SPY), and A060 (5SPY) https://rkwatchservice.com/comparison-of-the-error-rates-at-different-temperatures-for-9f62-10spy-9f85-5spy-and-a060-5spy/ Wed, 01 Oct 2025 02:59:51 +0000 https://www.watchuseek.com/threads/comparison-of-the-error-rates-at-different-temperatures-for-9f62-10spy-9f85-5spy-and-a060-5spy.5623044/ Watch Repair & Restoration Services in Northbrook & North Chicago Suburbs. Contact us for a free estimate at 224-213-7371. Learn more from our news blog.
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xiaofeng000

I have successively purchased three HAQ watches.
The first one is the AQ4091-56M, which uses the A060 movement and is claimed to have an accuracy of 5 SPY.
The second one is the SBGP017, which is equipped with a specially adjusted 9F85 movement and is ...

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xiaofeng000

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I have successively purchased three HAQ watches.
The first one is the AQ4091-56M, which uses the A060 movement and is claimed to have an accuracy of 5 SPY.
The second one is the SBGP017, which is equipped with a specially adjusted 9F85 movement and is claimed to have an accuracy of 5 SPY.
The third one is the SBGX095, which uses the 9F62 movement and is claimed to have an accuracy of 10 SPY.

I tested the timekeeping accuracy of these watches at different temperatures respectively in an…

Comparison of the error rates at different temperatures for 9F62 (10SPY), 9F85 (5SPY), and A060 (5SPY)

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Does GS SD UFA belong in this sub-forum or not? https://rkwatchservice.com/does-gs-sd-ufa-belong-in-this-sub-forum-or-not/ Wed, 01 Oct 2025 01:19:44 +0000 https://www.watchuseek.com/threads/does-gs-sd-ufa-belong-in-this-sub-forum-or-not.5644523/ Watch Repair & Restoration Services in Northbrook & North Chicago Suburbs. Contact us for a free estimate at 224-213-7371. Learn more from our news blog.
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wadia13

Can Mr. Moderator and/or the other powers that be around here please clarify? There are now a few threads related to UFA around here.

So the UFA movement is thermo-compensated (based on my very limited understanding reading the GS website linked belo...

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wadia13

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Can Mr. Moderator and/or the other powers that be around here please clarify? There are now a few threads related to UFA around here.

So the UFA movement is thermo-compensated (based on my very limited understanding reading the GS website linked below) but GS makes no claims of accuracy within 10 sec per year, rather they advertise 20 sec per year.

SLGB003G | Grand Seiko

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Citizen HAQ – why only 40mm models have lume? https://rkwatchservice.com/citizen-haq-why-only-40mm-models-have-lume/ Sun, 28 Sep 2025 01:19:11 +0000 https://www.watchuseek.com/threads/citizen-haq-why-only-40mm-models-have-lume.5644215/ Watch Repair & Restoration Services in Northbrook & North Chicago Suburbs. Contact us for a free estimate at 224-213-7371. Learn more from our news blog.
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wadia13

Just wondering what do you all think about Citizen's decision here? Within the current line-up, only the 40mm models with crown guards have lume while none of the smaller ones do. I understand the aforementioned 40mm models are meant to be 's...

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wadia13

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Just wondering what do you all think about Citizen's decision here? Within the current line-up, only the 40mm models with crown guards have lume while none of the smaller ones do. I understand the aforementioned 40mm models are meant to be 'sportier' while the smaller ones are "dressier". But surely there would be demand for 37mm models made in a sportier style with lume (for folks with smaller wrists)? It seems like a missed opportunity.

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New UFA https://rkwatchservice.com/new-ufa/ Thu, 25 Sep 2025 19:49:29 +0000 https://www.watchuseek.com/threads/new-ufa.5643896/ Watch Repair & Restoration Services in Northbrook & North Chicago Suburbs. Contact us for a free estimate at 224-213-7371. Learn more from our news blog.
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gangrel

All the major blogs have reviews. Attractive purple. 37 mm. Steel, which should be fine.

But no micro adjust! Argh! Seriously high still, too, but come on, once you have the micro adjust, and still on a top-tier (for non precious metals)…it shoul...

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Watch Repair & Restoration Services in Northbrook & North Chicago Suburbs. Contact us for a free estimate at 224-213-7371. Learn more from our news blog.
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gangrel

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All the major blogs have reviews. Attractive purple. 37 mm. Steel, which should be fine.

But no micro adjust! Argh! Seriously high still, too, but come on, once you have the micro adjust, and still on a top-tier (for non precious metals)…it should be there.

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Inhibition and Quartz Testers https://rkwatchservice.com/inhibition-and-quartz-testers/ Wed, 24 Sep 2025 09:30:20 +0000 https://www.watchuseek.com/threads/inhibition-and-quartz-testers.5560293/ Watch Repair & Restoration Services in Northbrook & North Chicago Suburbs. Contact us for a free estimate at 224-213-7371. Learn more from our news blog.
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BrianBinFL

In another thread I made some rather unflattering remarks about the oscillators in my two MoonSwatch watches. No, the MoonSwatch isn't HAQ, but this thread isn't really about the MoonSwatch, it's about the source of my initial mis-apprai...

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BrianBinFL

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In another thread I made some rather unflattering remarks about the oscillators in my two MoonSwatch watches. No, the MoonSwatch isn't HAQ, but this thread isn't really about the MoonSwatch, it's about the source of my initial mis-appraisal of them, which is a topic that should be of interest to those of us living in HAQ-land – inhibition.

English being the somewhat wacky…

Inhibition and Quartz Testers

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Citizen 0100 future? https://rkwatchservice.com/citizen-0100-future/ Wed, 10 Sep 2025 00:38:38 +0000 https://www.watchuseek.com/threads/citizen-0100-future.5642075/ Watch Repair & Restoration Services in Northbrook & North Chicago Suburbs. Contact us for a free estimate at 224-213-7371. Learn more from our news blog.
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gangrel

Deployant has a new post yesterday about 2 new fall releases...a Duratect Platinum with platinum-foil dial, and a Duratect Amber Yellow with a gold-speckled brown dial. It included this:

The movement remains the exce...

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Watch Repair & Restoration Services in Northbrook & North Chicago Suburbs. Contact us for a free estimate at 224-213-7371. Learn more from our news blog.
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gangrel

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Deployant has a new post yesterday about 2 new fall releases…a Duratect Platinum with platinum-foil dial, and a Duratect Amber Yellow with a gold-speckled brown dial. It included this:

The movement remains the excellent A. 060, which has a perpetual calendar and keeps timing accurate to 5 seconds a year. This is a step down from Citizen’s crown jewel Caliber 0100, which achieves an amazing 1 second a year. We hear that the first production of the C. 0100 (see this comprehensive…

Citizen 0100 future?

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Certina Conversion? https://rkwatchservice.com/certina-conversion/ Tue, 09 Sep 2025 21:35:34 +0000 https://www.watchuseek.com/threads/certina-conversion.5642034/ Watch Repair & Restoration Services in Northbrook & North Chicago Suburbs. Contact us for a free estimate at 224-213-7371. Learn more from our news blog.
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hancdc1

I’ve read numerous posts in this forum regarding HAQ upgrades for regular quartz movements. I’ve been itching for a square/tank quartz but I’m trying to keep my collection all HAQ. I’m looking at the Certina DS Podium C001510A or similar. Is there an E...

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hancdc1

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I’ve read numerous posts in this forum regarding HAQ upgrades for regular quartz movements. I’ve been itching for a square/tank quartz but I’m trying to keep my collection all HAQ. I’m looking at the Certina DS Podium C001510A or similar. Is there an ETA movement available that will work? I’m concerned about the 4:30 date location. Any input is appreciated.

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If not ETA, then who? https://rkwatchservice.com/if-not-eta-then-who/ Fri, 05 Sep 2025 20:22:50 +0000 https://www.watchuseek.com/threads/if-not-eta-then-who.5641602/ Watch Repair & Restoration Services in Northbrook & North Chicago Suburbs. Contact us for a free estimate at 224-213-7371. Learn more from our news blog.
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steveb7az

My apologies if this has been asked and answered before. I searched the forum but do not seem to be having much luck finding answers today.

ETA, as I understand it, is no longer producing some of their HAQ quartz movements. If that is correct why have...

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steveb7az

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My apologies if this has been asked and answered before. I searched the forum but do not seem to be having much luck finding answers today.

ETA, as I understand it, is no longer producing some of their HAQ quartz movements. If that is correct why have some of the other quartz movement manufacturers not stepped in to try and grab a slice of that market? There is certainly a market for quartz. Not sure as many consumers care about HAQ, but that is the easy answer. If Ronda, Miyota and others…

If not ETA, then who?

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Seiko patent application for GPS watch with TC https://rkwatchservice.com/seiko-patent-application-for-gps-watch-with-tc/ Fri, 29 Aug 2025 08:50:47 +0000 https://www.watchuseek.com/threads/seiko-patent-application-for-gps-watch-with-tc.5640612/ Watch Repair & Restoration Services in Northbrook & North Chicago Suburbs. Contact us for a free estimate at 224-213-7371. Learn more from our news blog.
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Mandaue

Seiko has applied for a US patent for a thermocompensated GPS watch.

This is denoted Fujisawa (2024), PDF atttached..

Her...

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Mandaue

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Seiko has applied for a US patent for a thermocompensated GPS watch.

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This is denoted Fujisawa (2024), PDF atttached..

Here is one diagram from the patent, which mentions both thermocompensaiton and time correction:

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In laymans terms, this could be describing an Astron GPS watch with TC. (TC has entered the watch conversation in forums such as Reddit, as shown by Omega's webpage for the…

Seiko patent application for GPS watch with TC

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