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Continue readingPre-Purchase Question – first HAQ in a long time
Hello, I would like some advice for my next HAQ purchase. Can anyone recommend watches that can reliably achieve an accuracy of ±5 sec/year, given that I would wear this piece a max of 3-4 days a week? Or failing that, a watch that would reliably keep w/i ±10 spy? I have considered the 0100 several times, but the designs just don’t appeal to me. Back in 2012-2013 I had a really nice 2005-era The Citizen Chronomaster CTQ57-0955 (A660) non-Eco-Drive. That was running 4-5 spy according to…
Continue readingMorgenwerk
Anyone else as excited about these as I am? A high accuracy thermocompensated satellite watch that learns from its error rate? The cheapest version is around $1100
http://www.ablogtowatch.com/morgenw…m/morgenwerk-satellite-precision-watch-is-more-a…
Continue readingCitizen A060
Is the A060 a durable and reliable mechanism?
After buying a new watch with such a movement, when will it require a battery replacement or inspection that involves sending the watch to Japan?
Share the repair experience of Citizen HAQ watch.
My friend (also from China like me) has been complaining that his AQ4060-50A watch (movement model A060) keeps time inaccurately, gaining 2-4 seconds every month. His watch is out of warranty. After talking with him repeatedly, I suggested he send the …
Continue readingCatalog of Citizen A660 A010 A060 0100 HAQ models
This is a running catalog of all known watches with Citizen’s caliber 0350, A660, A010, A060 and 0100 high accuracy quartz movements. It is provided in PDF form for offline viewing. The intended audience are those interesting in acquiring one of these watches.
Continue readingPlease jump to post #60 for latest version 2.0 (Mar 2025).
Original text
I have scoured the web for days to build the following list in the Citizen forum. If I have…
NEAR-HAQ Spring Drive
Grand Seiko Steps Into The Future With New Spring Drive U.F.A. SLGB001 And SLGB003
✓ Introducing the Grand Seiko Spring Drive U.F.A. SLGB001 and SLGB003 ✓ The next step in Spring Drive technology is here ✓ Check it out! ✓
www.fratellowatches.com
They’re calling it ultra fine accuracy Spring Drive, rating it at 20 SPY…so, as I say, not HAQ per forum specs, but a big step up from ~ 10 SPM. And no battery, no solar. This version is an automatic, with a 72 hour PR.
The new movement (9RB2) is also smaller, so the 2 references (SLBG001 is a platinum LE at the “if you have to ask the price…
The Citizen AQ4100-65H – Timing data
Hello all, this is the beginning of what will hopefully be a long thread sharing the timing data I take of my AQ4100 (movement A060).
Continue readingI’ve settled on 1 week intervals for measuring the drift, as sadly I do not have infinite time to dedicate to this endeavor. I think once a month would be a good interval for sharing the results, as I suspect changes week to week could be dramatic given my wear patterns.
On that subject, this will very much be real world data. I’m going to wear the watch…
Geneaology of HAQ movements
There have been three major approaches to improving quartz accuracy:
1) use a thermally insensitive XO
2) control the frequency of the XO by varying the capacitance of the oscillator circuit
3) arrange the circuit to divide the frequency of the XO by a…
What are the unanswered questions in HAQ?
What are your unanswered questions regarding HAQ watches?
Some of mine are:
1. Is 9F regulatable wirelessly?
2. What 9F regulating equipment is available in the main GS overseas service centers such as Mahwah NJ and Singapore?
3. What is the aging …
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