Quartz Watch Accuracy ?

[bazza.]

Just did this video you maybe surprised as there is a big difference in accuracy
I used 2 Sinn's 2 Seiko and a cheap Skmei for the test
I set all the watches to the same time around 12 weeks ago

https://youtu.be/FPll_yJ7JN8

[MrGrumpy]

OK, why is the Seiko 15 minutes fast??

[bazza.]

OK, why is the Seiko 15 minutes fast??

To be fair to the Seiko its 31 years old I've owned it from new I'm just happy its still ticking :)
I got it for my 15th birthday

[helidoc]

Very interesting video, thanks Bazza

I think your EZM 2 has the same movement as the B&R Demineur I had until a few months ago, and that used to gain about 5 secs every 2 weeks, at which point I would hack it back to atomic time. Your Sinn seems to perform about the same.

There is something compelling about TC quartz, my Aerospace is just always on atomic time. I’m very impressed by how the 7c46 does by comparison , as I don’t think it’s meant to be TC.

Dave


Sent from my iPhone using Tapatalk

[xellos99]

And then try a Seiko 9F quartz and 7 months later 2 secounds out

[Neil.C]

Very interesting.

With quartz I rarely check accuracy when I get them out of the box.

My Seamaster is generally about 1 second a month fast which is fine until you have to change the clocks anyway.

I think the 9F is supposed to be the pinnacle nowadays.

Sometimes quartz is just so very convenient.

[bazza.]

Your right the 9f movement looks to be the top of the game at the min plus its not a bad looking bit of kit also

[andyb]

Or how about this:

https://www.citizenwatch-global.com/...0-1/index.html

https://www.citizenwatch-global.com/caliber0100/


±1 second per year.

[MrGrumpy]

To be fair to the Seiko its 31 years old I've owned it from new I'm just happy its still ticking :)
I got it for my 15th birthday

I always got the impression that a quartz watch would either function correctly or not at all, unlike a mechanical which can work well or badly. Am I wrong in this? Your Seiko would suggest I am!

[petethegeek]

This slightly dated article still provides some interesting and relatively accessible information and answers to most of the points raised above/below.

[Neil.C]

I always got the impression that a quartz watch would either function correctly or not at all, unlike a mechanical which can work well or badly. Am I wrong in this? Your Seiko would suggest I am!

Better movements are generally more accurate than the petrol station types.

[HenPecked]

And then try a Seiko 9F quartz and 7 months later 2 secounds out

My Father would set his once a year, on his birthday, remarking each year how it was perhaps another second or two out and that he should get it serviced.

[Mr.D]

I'v got an omega F300 from the 70s and its generally accurate to +/- 2 secs and rarely needs correcting.

[Dsmith1974]

And then try a Seiko 9F quartz and 7 months later 2 secounds out

9Fs are tremendous. I’ve been meaning to pick one up.


Sent from my iPhone using Tapatalk

[Dsmith1974]

Your right the 9f movement looks to be the top of the game at the min plus its not a bad looking bit of kit also

F.P. Journe do a quartz that looks to be on par with a 9F. Maybe even better?


Sent from my iPhone using Tapatalk

[ktmog6uk]

this has been my travelling/ holiday watch for a new years now, world timer, radio controlled, perpetual calendar, 200m wr, titanium, sapphire. i really should sell all my other watches if i thought about it..... I think radio controlled time in a quartz is the way to go.
https://www.amazon.co.uk/Citizen-Rad.../dp/B00ZAJ45GG

[MrGrumpy]

I think radio controlled time in a quartz is the way to go.

Nice, but maybe an unnecessary complication? Basically, a quartz watch (of even a basic kind) is so damned accurate, that no-one (apart from obsessives!) even bothers checking the accuracy of their watch, let alone correct it. You have to reset it when the clocks go back or forward, and that's sufficient to keep it more or less accurate. This is also why I don't understand the need for high accuracy quartzs - seems like overkill. Of course, if you are a Japanese train driver who is expected to make sure his/her train arrives and departs within 5 seconds of the timetabled time, then a radio controlled clock is useful. For others, probably not so much.

[Dave+63]

I’m sure that, to some, the fact that the watch has to be synchronised with the atomic clock is unacceptable.

They’ll not be happy until they’ve made a cheapish, every day wearable atomic watch.

* I know that there’s already an atomic watch in existence but it could hardly be described as cheapish or wearable yet.

Until then, a radio controlled watch is about as good as it gets and the ultimate accuracy in the quartz world is just as important as the ultimate accuracy in the mechanical world. Non of it is particularly necessary in everyday life.

[Griswold]

Interesting thread.

My Longines VHP is claimed to be +- 6 SPY. This is helped by a number of features, not least an interdependently adjusted hour hand without stopping the seconds, so time zones and BST etc have no impact.




A number of quartz movements have trimmers to adjust the timekeeping. It may be worth the OP opening up the Seiko to see.

[bazza.]

Interesting thread.

My Longines VHP is claimed to be +- 6 SPY. This is helped by a number of features, not least an interdependently adjusted hour hand without stopping the seconds, so time zones and BST etc have no impact.




A number of quartz movements have trimmers to adjust the timekeeping. It may be worth the OP opening up the Seiko to see.

I could but wouldn't have any idea what to look for in a quartz watch, I replaced the battery but that's all

[Griswold]

I could but wouldn't have any idea what to look for in a quartz watch, I replaced the battery but that's all

There's lots of info on the net, do a search on quartz movement trimmer

On this old thing from the 1970's




The timing is very good indeed due to light trimming. I've highlighted the trimmer here....




Around 20 seconds/month which isn't bad for a 70's cheapie.