Manufacturer Grand Seiko (Seiko Watch Corporation) Caliber Number 9SC5 Movement Type Automatic, self-winding mechanical, chronograph In-House? Yes Jewels 60 Beat...
Diashock
Manufacturer Seiko Caliber Number 6R54, 6R54A Movement Type Automatic, self-winding mechanical In-House? Yes Diameter 27.4mm Casing Diameter 27mm Height 5.3mm...
Manufacturer Seiko Caliber Number 6R55, 6R55A Movement Type Automatic, self-winding mechanical In-House? Yes Diameter (needs confirmed) Casing Diameter (needs confirmed)...
Manufacturer Seiko Caliber Number 6R20, 6R20A Movement Type Automatic, self-winding mechanical In-House? Yes Diameter 27.40mm (outside), 27mm (casing) Height 6.15mm...
Manufacturer Grand Seiko (Seiko Watch Corporation) Caliber Number 9R31, 9R31A Movement Type Automatic, Spring Drive In-House? Yes Jewels 30 Frequency...
Manufacturer Seiko Caliber Number 6R31, 6R31A Movement Type Automatic Diameter 27.40mm (needs confirmed) Casing Diameter 27mm (needs confirmed) Height 5.25mm...
Manufacturer Seiko (Seiko Watch Corporation) Caliber Number 6R64, 6R64A Movement Type Automatic In-House? Yes Jewels 29 Beat Rate 28,800 vph...
Manufacturer Grand Seiko (Seiko Watch Corporation) Caliber Number 9R65, 9R65A Movement Type Automatic, Spring Drive In-House? Yes Jewels 30 Frequency...
Manufacturer Seiko Caliber Number 6R35A (6R35) Movement Type Automatic Diameter 27.40mm Casing Diameter 27mm Height 5.25mm Jewels 24 Vibrations Per...
Manufacturer Seiko Caliber Number 8L55, 8L55A Movement Type Automatic In-House? Yes Diameter (needs confirmed) Casing Diameter (needs confirmed) Height (needs...
Manufacturer Seiko Caliber Number 8L35, 8L35A Movement Type Automatic In-House? Yes Diameter (needs confirmed) Casing Diameter (needs confirmed) Height (needs...
Manufacturer Seiko Caliber Number 6R35, 6R35A Movement Type Automatic Diameter 27.40mm (needs confirmed) Casing Diameter 27mm (needs confirmed) Height 5.25mm...
Manufacturer Seiko Caliber Number 2906, 2906A Movement Type Automatic Diameter 18mm (casing) Height 5.35mm Jewels 17 Vibrations Per Hour 28,800...
Diashock is the name of Seiko Watch Corporations’s proprietary anti-shock system (or shock absorber) for mechanical/automatic watch movements. It was...
Manufacturer Seiko Caliber Number 6R15 (A/B/C/D) Movement Type Automatic Diameter 27.40mm (outside), 27mm (casing) Height 5.25mm Jewels 23/24 Vibrations Per...
Manufacturer Seiko Caliber Number 6R27 Base Caliber 6R15 (6R family) Movement Type Automatic Jewels 29 Vibrations Per Hour 28,800 bph...
Manufacturer Grand Seiko Caliber Number 9S85 / 9S85A Movement Type Automatic (Hi-Beat), self-winding mechanical In-House? Yes Jewels 37 Power Reserve...
Brand Seiko Caliber Number 9S65 / 9S65A Movement Type Automatic Jewels 35 Power Reserve 72 hours Vibrations Per Hour 28,800...
Seiko in-house caliber 9S66 found in a Grand Seiko GMT Limited Edition. This caliber is essentially an upgrade from GS cal. 9S56 which offered a lower 48 hr power reserve.
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