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Seiko SII Caliber NH35

Seiko (SII) Caliber NH35A

Manufacturer Seiko (Seiko Instruments Inc. aka SII, Time Module Inc. aka TMI) Caliber Number NH35A (aka NH35) Movement Type Automatic,...

Seiko Tmi Caliber Nh38a

Seiko (SII/TMI) Caliber NH38A

Manufacturer Seiko (SII, TMI) Caliber Number NH38, NH38A Movement Type Automatic, self-winding mechanical Diameter 27.40mm Casing Diameter 29.36mm Height 5.32mm...

Seiko Caliber 4r36a Drawing

Seiko Caliber 4R36

Manufacturer Seiko Caliber Number 4R36, 4R36A Movement Type Automatic Diameter 27.4mm (casing 27mm) Thickness 5.32mm Jewels 24 Vibrations Per Hour...

Seiko Caliber 7s26a Movement

Seiko Caliber 7S26

Manufacturer Seiko Time Corp. Caliber Number 7S26 Replaced By 4R36 Movement Type Automatic, self-winding mechanical In-House? Yes Diameter 27.4mm Casing...

Seiko Caliber 7s36

Seiko Caliber 7S36

Manufacturer Seiko Caliber Number 7S36, 7S36C Movement Type Automatic Jewels 23 Vibrations Per Hour 21,600 bph Shock System Seiko Diashock...

Seiko Caliber Y675

Seiko Caliber Y675

Manufacturer Seiko Caliber Number Y675 Based On 7S25 Movement Type Automatic, self-winding mechanical Diameter 27.4mm Height 4.8mm thick Jewels 21...

Seiko Caliber Y676

Seiko Caliber Y676

Manufacturer Seiko Caliber Number Y676 Based On 7S26 Movement Type Automatic, self-winding mechanical Diameter 27.4mm Height 4.8mm thick Jewels 21...

Seiko Building in Ginza Japan by timfranklinphotography

What is the difference between SII, TMI, and Seiko Epson Watch Movements?

There is a lot of confusion in the watch community about Seiko and Seiko-related watches and movements. Most of the...

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