Seiko caliber 9R86 found in the Grand Seiko Spring Drive model SBGC005. 50 jewels and consisting of 416 parts. Made in Japan.
Hi-Beat
Brand Miyota Caliber Number 9075 Movement Type Automatic Lignes 11.5”’ Diameter 26mm Height Unconfirmed (see comments) Jewels 24 Beat Rate...
Manufacturer Grand Seiko (Seiko Watch Corporation) Caliber Number 9SC5 Movement Type Automatic, self-winding mechanical, chronograph In-House? Yes Jewels 60 Beat...
Manufacturer Grand Seiko Caliber Number 9S85 / 9S85A Movement Type Automatic (Hi-Beat), self-winding mechanical In-House? Yes Jewels 37 Power Reserve...
Manufacturer Seiko Caliber Number 2906, 2906A Movement Type Automatic Diameter 18mm (casing) Height 5.35mm Jewels 17 Vibrations Per Hour 28,800...
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