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Automatic watches what degree of accuracy (gains or losses) should i expect from an automatic watch in secs/hour day week month? Can it be regulated?

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  •  Michael
    Michael Jan 17, 2012

    You don't say what brand of watch you have. This is a very complex question. Different brands are different qualities. Expectations are different. If you are asking about a high quality watch such as a Rolex for example, a new Rolex not a 50 year old one, fully wound, an 'average' positional rate is +/_ 6 seconds a day. It can be regulated but the real question your asking I suspect is can the number be zero? Practically speaking no.

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Yes it can be regulated,there is a regulator inside,positive and negative,positive it means make it fast, ,negative it means make its slow..the degree of accuracy of automatic watches is continouos moving, if you don't take it in your wrist,because automatic watch it depends in you,when you are moving ...

Posted on Jul 02, 2008

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Nowhere in the little operations manual that came with my watch does it give the accuracy of the timepiece. Where can I get that information? I have a movado ESQ bracer chronograph.


Interesting question. I know little about watches but, as you would know, your watch does have a quartz movement, so, from Wikipedia, 'Quartz clock':

Standard-quality resonators of this type are warranted to have a long-term accuracy of about 6 parts per million at 31 degrees C (87.8 F): that is, a typical quartz wristwatch will gain or lose 15 seconds per 30 days (within a normal temperature range of 5 deg C / 41 F to 35 deg C / 95 F) or less than a half second clock drift per day when worn near the body.

If a quartz wristwatch is "rated" by measuring its timekeeping characteristics against an atomic clock's time broadcast, to determine how much time the watch gains or loses per day, and adjustments are made to the circuitry to "regulate" the timekeeping, then the corrected time will easily be accurate within 10 seconds per year. This is more than adequate to perform celestial navigation.



Assuming that you have a computer with internet-synced time and good internet, meaning around 1/100 second accuracy, why not compare the watch to the computer over the space of a week?

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1 Answer

How do I set the time on my Pink armiton WR165 45-6967 watch?


  1. From Time Telling Mode, press 'A'.Seconds flash. Press 'C' to zero out seconds.
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    NOTE: Pressing and holding 'C' will advance digits rapidly.
  3. When 12 Hour Format is selected, 'PM' indicates 'p.m.' times; there is no indicator for 'a.m.' times.
  4. Press 'B'. Minutes flash. Press 'C' to advance the Minutes.
  5. Press 'B'. The Month flashes. Press 'C' to advance the Month.
  6. Press 'B'. The Date flashes. Press 'C' to advance the Date.
  7. Press 'B'. The Day of Week flashes.
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I have a ladies rolex oyster perpetual datejust which was bought a couple of months ago. It's an automatic watch and although I wear it all the time including during sleep, it's constantly slow. Is...


I suggest you talk to Rolex or thier local dealer to see if the slowness you are concerned about is outside the guaranteed accuracy for the watch.

I can't find any reference to accuracy on the Rolex site but other makers have mentioned 15 seconds per month for the accuracy of an automatic watch. This seems poor compared to the accuracy that we have become used to from electronic watches but it is a mechanical watch!

Speaking to the maker might clarify what you can expect from your watch and if it is outside their tolerances, I would expect them to put it right under their warranty.

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1 Answer

Dear Sirs! My new (1month) Longines automatic watch hastens each day (and night) four seconds.Model L4.721.2 Is it normal or I have to turn to the laboratoty to fix the problem?! Thanks a lot Iosif


An automatic watch that gains 4 seconds in a day is good.A new Rolex is rated at 5 seconds per day so 4 seconds is well within what you can expect for your watch.As a tip when the watch is off the wrist place on its side,gravity slows the operation of the watch just a fraction.This is called positional error and may help.
Regards

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1 Answer

I have an aquaracer automatic and it gains up to 6 - 10 minutes in a day. I have had it fixed before and it was fine for 12 months and now it has started again. Is this normal?


All of the watches I have owned have run for many years without attention and when you buy one as expensive as yours, I would expect similar reliability.

I suggest that you speak to the maker (or contact them via their web site "Tag Heuer.com") and discuss your problem with them.

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Previously accurate Seiko dive watch suddenly gaining 1-2 hrs/day


if your watch caliber is 7s26b(look at the case back plate)is a usual problem of those calibers!the hair spring stuck somehow and the watch runs!a seiko authorized sevice center can help you!dont let anybody else magician to ruin your watch!is a routine repair for someone with knowledge and support from seiko!

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WATCH RUNNING TOO FAST BUT NOT THE SAME IN SAME INTERVALS


i think it has prob with its balancer.. anyway.. in this world there is no constant time,, n,n

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The button advances the numeric day. After the numeric day is advanced one full month, the month dial advances to the next month. I just about got a blister pressing the button enough times to advance the month from January all the way around to December. Then I had to advance the numeric day to the current numeric day. The previous person told you by turning the dial 24 hours you can advance the alphabetic day of the week by one day (Sun, Mon,etc.).

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Need an instruction manual for my Casio Triple Sensor watch


Hi there!

This site is quite useful - http://www.theusermanualsite.com/

Just log in with your Email & postcode to get a PDF of the information it holds.

If this assists you, Please rate as Fixya! (It's free)

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1 Answer

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