FS: Omega Seamaster Electronic f300 hz day date chronometer

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FS: Omega Seamaster Electronic f300 hz day date chronometer

Hi all,

I’m selling this beautiful and almost NOS Omega Electronic f300.
You have here an outstanding watch from a significant page of watchmaking history.

For the history and movement specs, here are some infos gathered from the net:
Omega Seamaster f300 Hz. The f300 Hz movements were developed jointly by Omega and ESA under license from Bulova. They were used by a number of manufacturers in the 1970's. Omega suggested service intervals of 5-6 years, which shows these are a hardy movement that can still be found running strongly in many watches.

Tuning fork movements, although more accurate than mechanical movements, were quickly replaced by quartz movements that were cheaper to produce and seen as more accurate. The era of the tuning fork movement was therefore short lived and many will miss out on owning one of these outstanding timepieces.

A battery powers the f300 Hz tuning fork movement in the Omega. A miniature transductor sets a resonator vibrating at 300 oscillations per second (300 Hz). These oscillations are maintained by an electronic circuit and divided into units of time.
As the wrist is turned the resonator is subject to differing strengths of gravitational pull. To cope with this Omega counter balance the resonator to nullify these effects. This and the use of electrical circuits ensure consistent time keeping and Omega claimed accuracy within 2 seconds per day, i.e. accuracy of 99.9977%. Pretty accurate!
The vibrating resonator causes the movement to gently hum, which has resulted in watches with these movements often being called hummers. The movement also provides for a sweep second hand rather than the ticking hand seen on quartz watches, which make it, with Seiko’s spring drive and Bulova Accutron, quite unique.

I particularly like the very wearable design of this one. It keeps it 70’s roots but is still modern. Diameter is 38mm without crown.

This copy work perfectly and has just been serviced, battery is new.

Pictures speak for themselves

Price is 850 euros including shipping insured worldwide.
Watch is in Switzerland

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1 wallclock secs ( 0.17 usr + 0.04 sys = 0.21 CPU)