Hello together,
As far as I know 32 kHz tuning fork quartz have a not negligible position dependency.
As I understand the situation, the temperature dependence is compensated for HAQ, but not the position dependency.
I now had the idea that the rate …
Continue readingSurprise, surprise…F06.402 or .412 (no date, date versions). Steel or titanium case options, altho the titanium’s “awaiting restock.” The steel models are quite reasonably priced.
Will the *REAL* Bulova Precisionist Accuracy Specs Please Stand Up! (Hint: It’s not +/-10 sec/yr)
Prior to the 1978 appearance of Seiko Twin Quartz, the methods used to achieve high accuracy under varying temperatures were limited thermoinsensitivity via megahertz frequency AT-cut oscillators, and analog thermocompensation (analog TC) via some sort…
Continue readingAnyone 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 readingIs 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?
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 readingThis 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 t…
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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…
