Grand Seiko

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Grand Seiko Caliber T0 (T-Zero)

Manufacturer Grand Seiko Caliber Number T-Zero (T0) Movement Type Tourbillon, manual-wind In-House? Yes Diameter 36mm Thickness 8.22mm (total) Jewels 43...

Mechanical

2345

Seiko Caliber 8L55

Manufacturer Seiko Caliber Number 8L55, 8L55A Movement Type Automatic In-House? Yes Diameter (needs confirmed) Casing Diameter (needs confirmed) Height (needs...

Automatic

439

Grand Seiko Caliber 9R31

Manufacturer Grand Seiko (Seiko Watch Corporation) Caliber Number 9R31, 9R31A Movement Type Spring Drive, manual-wind In-House? Yes Jewels 30 Frequency...

Mechanical

122

Grand Seiko Caliber 9R65

Manufacturer Grand Seiko (Seiko Watch Corporation) Caliber Number 9R65, 9R65A Movement Type Automatic, Spring Drive In-House? Yes Jewels 30 Frequency...

Automatic

522

List of Seiko Watch Movements

Below is a list of Seiko movements. The Seiko calibers that are already listed on the site will be linked...

Other

1119

Seiko Caliber 5740C

Brand Seiko Caliber Number 5740C Base Caliber 5740 Movement Type Manual wind, mechanical Jewels 23 Vibrations Per Hour 36,000 bph...

Mechanical

613

Seiko SII TMI NH25A vs NH35A Differences Compared

Seiko Caliber NH25A VS. NH35A

What is the difference between Seiko caliber NH25 and NH35? There are some differences between these overall similar movements. The...

Automatic

3311

Grand Seiko Caliber 9S65

Brand Seiko Caliber Number 9S65 / 9S65A Movement Type Automatic Jewels 35 Power Reserve 72 hours Vibrations Per Hour 28,800...

Automatic

610

Seiko caliber 8R28 found in an Ananta model SRQ011. This automatic chronograph movement has 34 jewels, power reserve of 45+ hours, consists of 292 parts, and beats at 28,800 vph. It has a column wheel and vertical clutch. Made in Japan.

Automatic

310

Grand Seiko Caliber 9S85

Manufacturer Grand Seiko Caliber Number 9S85 / 9S85A Movement Type Automatic (Hi-Beat), self-winding mechanical In-House? Yes Jewels 37 Power Reserve...

Automatic

310

Seiko Caliber 9R86

Seiko caliber 9R86 found in the Grand Seiko Spring Drive model SBGC005. 50 jewels and consisting of 416 parts. Made in Japan.

Automatic

Grand Seiko Caliber 9SC5

Manufacturer Grand Seiko (Seiko Watch Corporation) Caliber Number 9SC5 Movement Type Automatic, self-winding mechanical, chronograph In-House? Yes Jewels 60 Beat...

Automatic

Grand Seiko Caliber 9F85

Manufacturer Grand Seiko (Seiko Time Corp.) Caliber Number 9F85, 9F85A In-House? Yes Movement Type Quartz, battery-powered Chronometer Spec? Yes Thermocompensated?...

Quartz