Oh, I made a mistake in my previous post - actually you pull the crown one position to adjust hours and to the second position to adjust minutes (or 1st position AM/PM and 2nd position date if you press onto that display before pulling the crown....) There is no up/down which kind of makes it a fake crown! (Been playing with too many Japanese watches recently
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I didn't take pics of the insides and the watch is kind of inaccessible right now.... There's no 'proper' keyless works but rather the crown moves a slider that carries a set of three gold contacts that selectively bridge various pads on the PCB according to the crowns position. I spent ages poking and proding trying to release the crown so I could get the movement out but in fact you disassemble by removing the back plastic chassis piece by unclipping around its perimeter. And then everything else drops out from there.
There's not much on the back side of the PCB but tracking / Xtal / Trim Cap and a few other discretes. Everything else is on the other side under the LC panel which is held under a pressed metal frame. I didn't pull all of that apart as I have a worker and didn't see any reason to accidentally mash wirebonds or crack the LC panel. Overall I'd say the movement design was clean and efficient but unspectacular. Thats perhaps in part due to the two battery architecture which eliminates some of the PSU circuitry that clutters the back-side of many early Japanese watches. With no backlight, buzzer, keyless or buttons its all in the silicon and glass.