Vintage Electronic Hi-beat

Like Seiko, Citizen made electro-mechanical movements for a relatively short while in the mid 60's to mid-70's, before the quartz 'revolution'. In fact Citizen was first to produce this type of watch - battery powered but using a mechanical balance and hair spring - with its X8 Cosmotron. I've just got hold of a 1975 Cosmotron, one of the latest models with the 7804 movement, in pretty good condition, which runs at 36000bph and has a fine adjuster for tuning its timekeeping. Some versions featured a second button at the 8 o'clock position which zero'd the minute hand, giving it a basic chrono function.

Only one pic at the moment, but I think its simple style will make this a favourite of mine:



Sweephand