
Installed on an old large clock, the clock wasn't accurate, but I don't want to give it up. I thought it might be possible to replace the mechanism with an atomic clockwork. I have other atomic clocks that have worked great, no need to adjust the time even for Daylight Savings Time. And these work pretty much the same (maybe 2 seconds difference). I think they are standard no matter the watch is big or small. Note: I have to reset them a few times to get these results. So far happy with the purchase. Good luck with mods! If you have a nice but non-atomic clock, this is the one you should really consider.

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