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Hamilton-Ricoh Electric ―
Citizen X8 / Cosmotron / IC-12 ―
Seiko EL-310, EL-320, EL-330, EL-370, Elnix ―
Citizen Hisonic, GX Cosmotron ―

this is the thread for those watches which are powered by electricity, but which use a mechanical timebase (balance-wheel or tuning-fork) which communicates motion to the hands mechanically. Some folks call them "pre-quartz" watches, but I don't think the term is apt. All the Seiko electronics other than the EL-310 (31EL) came out after the Astron!

I have to admit, these hit me right in my fascination with road-not-taken fringe technologies. You can buy brand-new hand-wind or automatic mechanicals all day, every day of the week, if you have deep enough pockets, but aside from one Accutron reissue a few years back, if you want a new electronic? You're out of luck, Chuck! Fortunately, I've been able to acquire a few that particularly appeal to me.





 

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Never even thought about Electric pocket watches... interesting.
I had a few of the 300hz ESA tuning fork watches (Omega, Certina, Longines, and a Titus) a number of years back, quite liked them, and have been considering another F300 Constellation.

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Never even thought about Electric pocket watches... interesting.
I had a few of the 300hz ESA tuning fork watches (Omega, Certina, Longines, and a Titus) a number of years back, quite liked them, and have been considering another F300 Constellation.

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I would love an Omega f300 as well. Know whether parts are available and one can find someone to work on it?

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I’ve got a few pieces that fit into these categories.

X8 Cosmotron


And this one;


A Hisonic


A Cosmotron GX


A couple of f300 divers;

and


I’ve got another couple of unusual ones to add as well.
Regards,
Ross
 

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This might be a borderline case. The very uncommon Citizen 8811, which uses a quartz crystal to regulate the oscillation of a conventional balance wheel. However when I say conventional, not regular-type conventional - the balance moves at a lazy 115,200 bph.


and this one, which I sadly had to use as a donor.


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Ross
 

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I would love an Omega f300 as well. Know whether parts are available and one can find someone to work on it?

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There usually is a loose movement or two being advertised on Ebay as NOS. I bought one of the supposedly NOS ones many moons ago for replacement and it worked. The guys that worked on all mine years back have since retired. There was, not sure if still is, an outfit in UK that did restoration work.

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This might be a borderline case. The very uncommon Citizen 8811, which uses a quartz crystal to regulate the oscillation of a conventional balance wheel. However when I say conventional, not regular-type conventional - the balance moves at a lazy 115,200 bph.


and this one, which I sadly had to use as a donor.


Regards,
Ross
Those are sweet!

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Elgin Electronic 105 with the Junghans 600.10 movement. I love the dial fonts and applied logo. This one runs perfectly in the case, but if I wear it, it stops once or twice a day and needs a hard flick to restart. I'm not sure why it does that though, possibly just needs a clean and lube? Some more info here: https://forums.watchuseek.com/f11/elgin-electric-105-a-4562913.html
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Citizen Cosmotron 7804. Strangest day / date setting mechanism I've encountered. You hold it upright and turn the crown to set the date, then turn it upside down and turn the crown to set the day
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Luch 3055. A strange hybrid movement that had two frequency regulating mechanisms: a quartz oscillator, and a balance. It's one of my most beautiful watches, with great subtle details like the blue stripes in the hands and blue border around the date. And those raised Cyrillic logos make me smile. Mine is the best example of one I've seen, with the original bracelet, which if I'm not mistaken, is made from chrome-plated brass. More info here: http://www.crazywatches.pl/luch-3055-electro-quartz-1981
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Accutron 218 with original bracelet
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The Seiko 31-7000, the first electronic watch from Seiko. This one is from January 1968. Fantastic creamy dial, complete with the atom and electron thingy symbol.
 
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