Manufacturer Seiko (aka Seiko Instruments, SII) Caliber Number NH71 (aka NH71A) Movement Type Automatic Lignes 12”’ Diameter 27.4mm Casing Diameter...
SII
Manufacturer Seiko Caliber Number 6R35, 6R35A Movement Type Automatic Diameter 27.40mm (needs confirmed) Casing Diameter 27mm (needs confirmed) Height 5.25mm...
Manufacturer Hattori aka Seiko Instruments Inc. (SII) Caliber Number VD54B Movement Type Quartz Lignes 12 3/4”’ Diameter 29.5mm Thickness 3.97mm...
Manufacturer Seiko Caliber Number NH37A (aka NH37) Base Caliber NH35A Movement Type Automatic Jewels 24 Vibrations Per Hour 21,600 bph...
Manufacturer Seiko Caliber Number NH25A (aka NH25) Movement Type Automatic Lignes 12”’ Diameter 27.40mm Casing Diameter 29.36mm Height 5.32mm Jewels...
Manufacturer Seiko Caliber Number NH36A (aka NH36) Movement Type Automatic Lignes 12”’ Diameter 27.40mm (outside) / 29.36mm (casing) Height 5.32mm...
Manufacturer Hattori aka Seiko Instruments Inc. (SII) Caliber Number VD51B Type Quartz Lignes 12 3/4”’ Diameter 29.5mm x 26mm (smaller...
Manufacturer Seiko (aka Seiko Instruments, SII) Caliber Number NH70 (aka NH70A) Movement Type Automatic Lignes 12”’ Diameter 27.4mm Casing Diameter...
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...
There is a lot of confusion in the watch community about Seiko and Seiko-related watches and movements. Most of the...
Manufacturer Seiko Instruments Inc. aka SII / Hattori / TMI Caliber Number VK64, VK64A Type Quartz (mecaquartz), chronograph Lignes 13.5”’...
Manufacturer Hattori aka Seiko Instruments Inc. (SII) Caliber Number VK83, VK83A Type Quartz (mecaquartz) Diameter 13 1/2”’ (30.8mm x 29.10mm)...
Manufacturer Hattori aka Seiko Instruments Inc. (SII) Caliber Number VD53B Type Quartz Size 12.75”’ (29.5mm) Height 4.57mm thick Jewels 0...
Manufacturer Seiko Instruments (SII) Caliber Number NE20, NEW20A Base Caliber NE15 Movement Type Automatic Lignes 12”’ Diameter 27.40mm Casing Diameter...
Manufacturer Seiko (SII, TMI) Caliber Number NH38, NH38A Movement Type Automatic, self-winding mechanical Diameter 27.40mm Casing Diameter 29.36mm Height 5.32mm...
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 6R27 Base Caliber 6R15 (6R family) In-House? Yes Movement Type Automatic, self-winding mechanical Lignes 12”’ Diameter...
Manufacturer Hattori aka Seiko Instruments Inc. (SII) Caliber Number VD53, VD53A, VD53B, VD53C Type Quartz Linges 12 3/4”’ Diameter 29.50mm...
Manufacturer Hattori aka Seiko Instruments Inc. (SII) Caliber Number VD55B Type Quartz Size Unknown (Please add to the comments below)...
Manufacturer Hattori aka Seiko Instruments Inc. (SII) aka Time Module (TMI) Caliber Number PC21J Type Quartz Lignes 6 3/4”’ x...
Manufacturer Seiko Caliber Number 8L55, 8L55A Movement Type Automatic In-House? Yes Diameter (needs confirmed) Casing Diameter (needs confirmed) Height (needs...
Manufacturer Seiko (aka Seiko Instruments, SII) Caliber Number NH72 (aka NH72A) Movement Type Automatic Lignes 12”’ Diameter 27.4mm Casing Diameter...
S. Epson/Hattori caliber VR34 (VR34A) quartz chronograph watch movement. Full caliber listing coming soon....
Manufacturer Hattori aka Seiko Instruments Inc. (SII) Caliber Number VK67, VK67A Type Quartz (mecaquartz) Diameter 13 1/2”’ (30.8mm x 29.10mm)...
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