Tag Archives: Cosmotron

This Week’s Featured Watch #64 – Cosmotron X8 4-480040

I’ve been looking out for the date version of the 0840 Cosmotron since I hadn’t previously found an example – designated the 4840, models with this movement were launched in 1970 and run at 21,600 beats per hour. Since my … Continue reading

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Latest Arrival – Cosmotron 7800

I have a soft spot for the Cosmotrons – these were electro-mechanical hybrid watches with a limited production life since their new technology was almost immediately superseded by quartz technology. The fact that they were doomed almost from day one … Continue reading

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This Week’s Featured Watch #57: Cosmotron GX (green dial)

I’ve featured a Cosmotron GX before – Number 33 in the series – but I have a second example. This one grabbed my attention since it has an unusual dial, featuring a textured green finish and contrasting white chapter ring: … Continue reading

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What Makes This Cosmotron Special?

There are a number of things that can make a watch ‘special’ – it may be an expensive high grade piece, or it might be a rare vintage model; it may have been a ‘world first’, or it may have … Continue reading

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Cosmotron 7803A Movement – the Special Version

The X8 / Cosmotron electro-mechanical movements  first produced in 1966 were, for a short time, Citizen’s most accurate watches – capable of reaching chronometer grade standards.  They had a very limited life though, since quartz technology was developed soon after … Continue reading

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Additions to the X8 Cosmotron Page

For the technically minded I’ve now included scans of exploded views of the two types of movement (08 & 78).

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X8 Cosmotron Page Update

I’ve just added a bit more information in the 78 series section on the Cosmotron Special. This describes the function of the button at 8 o’clock found on these models, with a link to a video showing it in action. … Continue reading

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