Question about Citizen A660 Perpetual Calendar and battery change
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  1. #1
    Member das997's Avatar
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    Question about Citizen A660 Perpetual Calendar and battery change

    I've read the Citizen A660 manual, but cannot determine whether you have to "reprogram" the perpetual calendar after a battery change. I would assume yes, but thought I'd ask the forum to see what happens after the battery is swapped out (you never know - it might retain the config)...
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    Re: Question about Citizen A660 Perpetual Calendar and battery change

    My CTQ57-0934 went about 2-4 weeks between the state "battery dead and removed" and "battery replaced," and to my surprise it retained the perpetual calendar information. You read this correctly, this was after multiple weeks without a battery. I wound up advancing the hour hand forward by about a month.
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    Member das997's Avatar
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    Re: Question about Citizen A660 Perpetual Calendar and battery change

    Quote Originally Posted by SamRHughes View Post
    My CTQ57-0934 went about 2-4 weeks between the state "battery dead and removed" and "battery replaced," and to my surprise it retained the perpetual calendar information. You read this correctly, this was after multiple weeks without a battery. I wound up advancing the hour hand forward by about a month.
    Thanks for this! I may never have to learn how to reset the calendar
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    Re: Question about Citizen A660 Perpetual Calendar and battery change

    Mine originally got shipped with the wrong month set, so believe me, you don't want to -- it's easy to do, but it takes an infuriatingly long time to iterate through all the date wheel positions.
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    Re: Question about Citizen A660 Perpetual Calendar and battery change

    Quote Originally Posted by das997 View Post
    I've read the Citizen A660 manual, but cannot determine whether you have to "reprogram" the perpetual calendar after a battery change. I would assume yes, but thought I'd ask the forum to see what happens after the battery is swapped out (you never know - it might retain the config)...
    Thanks Das for asking about this. If people don't inquire, then we can't build our collective knowledge.

    Another little detail to float around the back of my mind regarding these brilliant quartz masterpieces...
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  7. #6
    Member das997's Avatar
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    Re: Question about Citizen A660 Perpetual Calendar and battery change

    So for you that own the same watch ... Have you put it on a different strap (ie: sailcloth, rubber, NATO)? 19mm lug widths are not all that common.....

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    Re: Question about Citizen A660 Perpetual Calendar and battery change

    Quote Originally Posted by das997 View Post
    So for you that own the same watch ... Have you put it on a different strap (ie: sailcloth, rubber, NATO)? 19mm lug widths are not all that common....
    Not that hard, either. My A060 is on a Nomos velour; they have 18, 19, 20, and 21 IIRC in most of their straps. Most strapmakers that cut on order, do cut TO order...length, width, taper, stitching of your choice. Straps forum is a good place to address the topic in greater depth.
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    Re: Question about Citizen A660 Perpetual Calendar and battery change

    Quote Originally Posted by das997 View Post
    So for you that own the same watch ... Have you put it on a different strap (ie: sailcloth, rubber, NATO)? 19mm lug widths are not all that common.....
    Yeah. I have so many 19 mm watches, and it's unfortunate. I've tried it on a black Barton canvas and also a white Barton Silicone Elite, mostly because they were the 19 mm bands that I found. The white/white colors match almost perfectly, but I felt it didn't project the image I wanted, and the black canvas works fine; but, you know, I'd recommend a color other than black, one that handles fading under rain better. I like the stock strap a lot, but I don't want to sweat in it.

    The Duratect coating has held up great, which has made me extra paranoid about scraping the lugs, especially the corners of the lugs, while performing strap changes.
    Last edited by SamRHughes; January 10th, 2020 at 04:46. Reason: qualified perfectly as "almost" perfectly
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    Member das997's Avatar
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    Re: Question about Citizen A660 Perpetual Calendar and battery change

    I've got a GS HAQ Diver on a sailcloth strap and I love it. Found that Watch Gecko sells a 19mm Sailcloth so I ordered it from the UK. I should have it in about 30 weeks

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    Last edited by ronalddheld; January 10th, 2020 at 11:55.
    Grand Seiko SBGX115, Citizen Chronomaster CTQ57-0934, Seiko SARX055, Omega Seamaster Professional 300, Seiko Sumo, King Seiko 9923-8050 (1980), Casio Oceanus T-200SLE .... Guess I'm into Japanese Watches

  11. #10
    Member das997's Avatar
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    Re: Question about Citizen A660 Perpetual Calendar and battery change

    Quote Originally Posted by das997 View Post
    I've got a GS HAQ Dinner on a sailcloth strap and I love it. Found that Watch Gecko sells a 19mm Sailcloth so I ordered it from the UK. I should have it in about 30 weeks

    Sent from my Pixel 2 XL using Tapatalk
    Diver, not Dinner. Can't figure out how to open and edit on a phone...

    Sent from my Pixel 2 XL using Tapatalk
    Grand Seiko SBGX115, Citizen Chronomaster CTQ57-0934, Seiko SARX055, Omega Seamaster Professional 300, Seiko Sumo, King Seiko 9923-8050 (1980), Casio Oceanus T-200SLE .... Guess I'm into Japanese Watches

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