Manufacturer Grand Seiko (Seiko Watch Corporation) Caliber Number 9R31, 9R31A Movement Type Spring Drive, manual-wind In-House? Yes Jewels 30 Frequency...
Dual-Spring Barrel
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Manufacturer Grand Seiko (Seiko Watch Corporation) Caliber Number 9SC5 Movement Type Automatic, self-winding mechanical, chronograph In-House? Yes Jewel Count 60...
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Found into a Certina DS 115 (7040/7140) 45
In my opinion, eta 2892- 2894 it s better in term of keeping time than…
Used by the Orion Hellcat
There is no regulator on the escapement, regulation is achieved using a laser adjustment system…
Thank you.
The 01 number varies according to the position of the complication. For example ST3600 is…
Hi Thomas, the same manual also states: "Automatic selection of time signal stations (JJY only)"…