Unboxed G-Shock, only half a minute off?
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  1. #1
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    Unboxed G-Shock, only half a minute off?

    I've just unpacked a new G-Shock from its tin, and first checked the time. It was 24+/- 2 seconds ahead. Production date was 2012-12-19.

    From the looks of it, it has not been touched at the dealer. No fingerprints, no slightly damaged edges in the booklets. So i suppose it has not been removed from its tin since it was produced, and therefore was also not able to synchronize with a time signal since.
    (It's a multiband 6 watch/GW-A1000). Half a minute in about 16 months would be an inaccuracy of around 2 s a month.
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  2. #2
    Member yankeexpress's Avatar
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    Re: Unboxed G-Shock, only half a minute off?

    Quote Originally Posted by sdog View Post
    I've just unpacked a new G-Shock from its tin, and first checked the time. It was 24+/- 2 seconds ahead. Production date was 2012-12-19.

    From the looks of it, it has not been touched at the dealer. No fingerprints, no slightly damaged edges in the booklets. So i suppose it has not been removed from its tin since it was produced, and therefore was also not able to synchronize with a time signal since.
    (It's a multiband 6 watch/GW-A1000). Half a minute in about 16 months would be an inaccuracy of around 2 s a month.
    Many of the atomic Gs can tell you the exact time they last sync'd. Not sure about the A1000.
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  3. #3
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    Re: Unboxed G-Shock, only half a minute off?

    I'm afraid it does not have a digital display to do so.

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    Re: Unboxed G-Shock, only half a minute off?

    Quote Originally Posted by sdog View Post
    I've just unpacked a new G-Shock from its tin, and first checked the time. It was 24+/- 2 seconds ahead. Production date was 2012-12-19.
    Just curious. How can I find the build date of my G-Shocks?


    Dave.

  6. #5
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    Re: Unboxed G-Shock, only half a minute off?

    learned on this forum today:

    On some G-Shock is a batch number. I has the form: 001A123B

    001A would be the fab code
    123 Is the 123 day of
    B the first year of the decade (counterintuitively A is year -1 of a decade)
    if it was lately manufactured B is 2011, C 2012

  7. #6
    Member captain kid's Avatar
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    Re: Unboxed G-Shock, only half a minute off?

    Just checked my GW-9010. It synced on December 30 2013 for the last time. (it's in a wooden box)
    It is less then 1 (more like 0.5) second behind my daily wear atomic watch.

    Another watch I found again after missing for at least 15 years (W-71) is less then 7 minutes fast :)

  8. #7
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    Re: Unboxed G-Shock, only half a minute off?

    That's rather surprising captain kidd. The last non-atomic g-shock i had used to be off by several seconds a week. In the winter more than a second a day. I noticed since i tended to miss the train when i didn't set the watch fortnightly.

    The wave-ceptor casio from 2000 was even off by a whole minute, when i returned after a months trip to china (no reception). It was rather badly calibrated, which wasn't noticed as i never missed reception for a day where i lived.


    A question related to this:
    I've read here on the forum that some atomics would calibrate themselves, based on the comparison of time signal and its own time measurement. I did not quite follow if this was (i) for only specific models, (ii) a wish, (iii) announced for future gshock, (iv) for all (recent) atomics.

    G-Shocks are, when worn regularly thermo-regulated anyway. With the thick case, lots of plastics, insulating gel/foam and the metal back they are most likely very stable near skin temperature. Perhaps around (30 +/- 5) C. That's such a small temperature range that it hardly ought to influence quartz frequency.
    Last edited by sdog; April 25th, 2014 at 01:44. Reason: double post avoided

  9. #8
    Member idkfa's Avatar
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    Re: Unboxed G-Shock, only half a minute off?

    Quote Originally Posted by sdog View Post
    In the winter more than a second a day. I noticed since i tended to miss the train when i didn't set the watch fortnightly.
    Wow, and I thought my life was down to the wire. That's impressive.
    Last edited by idkfa; April 25th, 2014 at 05:09.
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    Re: Unboxed G-Shock, only half a minute off?

    Yeah, when I unboxed my last watch (GW-9300), I immediately noticed how accurate it was (only 2 s off or so) and — really, to this day it's the most accurate G-shock I ever owned, ±0.08 s/day. This way (syncig daily) my watch is never more than 0.1 s off, which I absolutely love.

    Casio guarantees max ±0.5 s/day.

    Auto-adjusting (automatic gain control) seems to be only (ii) a wish (mine certainly at any rate).

    G-shock movements are not thermo-compensated (they would have to cost much more if they were, and I am not sure whether Casio would ever see a market for such a product), but yes, they tend to be more accurate when worn 24/7.
    Last edited by madman01; April 25th, 2014 at 04:10.

  11. #10
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    Re: Unboxed G-Shock, only half a minute off?

    Quote Originally Posted by sdog View Post
    A question related to this:
    I've read here on the forum that some atomics would calibrate themselves, based on the comparison of time signal and its own time measurement. I did not quite follow if this was (i) for only specific models, (ii) a wish, (iii) announced for future gshock, (iv) for all (recent) atomics.
    As stated above most likely a wish. All my casio's are atomic and two drift even after a sync. I've read of reports on this on the forum but was never able to confirm. My A1000 is dead on accurate with time.is but when it misses a sync, after a day or two it's -1/-2 sec. Compare that to my 9300 which is 1 sec ahead or very close to it.

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