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    There’s still definitely a market for the old casio watches (which are still readily on sale new).

    It’s a wonder they haven’t been updated to present technology. Sure it should be possible to have dramatically better battery life and accuracy?

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      It’s a wonder they haven’t been updated to present technology. Sure it should be possible to have dramatically better battery life.

      You forgot the /sarcasm tag. The batteries of some of those old casio watches were probably installed when Steve Jobs announced the first iPhone.

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        was it 10 or 7 years? Could be longer. If it ever needs replacement, that’d mean it could be improved.

        Re: accuracy, it DEFINITELY could be better. Same deal, if it ever needs adjustment, it’s not good enough.

        Seriously, got mine early 90s. Tech must have advanced.

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          If you want good stand-alone quartz oscillator accuracy, you need to have a thermal compensated oscillator. Not many companies make these - I know of watches available from Citizen, Swatch Group (Omega) and Breitling. All these watches are in the $3,000+ range.

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            The TCXO themselves aren’t anywhere near that expensive.

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              No, but the market isn’t there. For most people, 15s/month is perfectly acceptable.

              Next level is disciplining via radio signals, Bluetooth low-energy, or GPS. These take care of stuff like dates and DST changes too!

              High-accuracy quartz is a niche, so the total price is higher.

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        Casio makes thousands of different watches. The one here (FW-91, “affectionately” known as the Terrorist’s Watch) is one of the cheapest you can get.

        It’s still an order of magnitude more accurate than any mechanical wristwatch, and IIRC the battery lasts for years.

        If you go up the price scale, Casio has watches that charge via light, and that discipline their quartz oscillators via radio signal, or via BT to your phone (itself a NTP client) or directly to GPS.

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          I know, I own one from ages ago.

          (note: not a terrorist. But I heard, and did stop wearing it into airports)

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        Ah, thanks for reminding me that it’s almost that time of year again.