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 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…
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…
