Manufacturer Seiko Caliber Number NH25A (aka NH25) Movement Type Automatic Lignes 12”’ Diameter 27.40mm Casing Diameter 29.36mm Height 5.32mm Jewels...
SII
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 Instruments (SII), Time Module (TMI) Caliber Number NE15B Base Caliber NE15 Movement Type Automatic Diameter 27.40mm Casing Diameter...
Manufacturer Hattori aka Seiko Instruments Inc. (SII) Caliber Number VD51B Type Quartz Diameter 12 3/4”’ (29.5mm) 26mm between 3:00-9:00 Casing...
Manufacturer Seiko Instruments Inc. / SII / Hattori / TMI Caliber Number VK64, VK64A Type Quartz (mecaquartz) Diameter 13 1/2”’...
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 NH05A (aka NH05) Movement Type Automatic Jewels 21 Diameter 7 3/4”’ (17.5mm) Height 5.92mm Vibrations Per...
Manufacturer Hattori aka Seiko Instruments Inc. (SII) Caliber Number VD53 Type Quartz Size 12 3/4”’ (29.5mm) x 4.57mm thick Battery...
Manufacturer Hattori aka Seiko Instruments Inc. (SII) Caliber Number VK63, VK63A Type Quartz (mecaquartz) Diameter 13 1/2”’ (30.80mm x 29.10mm)...
Manufacturer Hattori aka Seiko Instruments Inc. (SII) Caliber Number PC21S Type Quartz Size 18.5mm x 3.15mm thick (overall height 4.8mm)...
[block]0[/block] There is a lot of confusion in the watch community about Seiko and Seiko-related watches and movements. Most of...
Manufacturer Hattori aka Seiko Instruments Inc. (SII) Caliber Number VK67, VK67A Type Quartz (mecaquartz) Diameter 13 1/2”’ (30.8mm x 29.10mm)...
Manufacturer Hattori aka Seiko Instruments Inc. (SII) Caliber Number VK83, VK83A Type Quartz (mecaquartz) Diameter 13 1/2”’ (30.8mm x 29.10mm)...
Manufacturer Seiko Caliber Number 6R27 Base Caliber 6R15 (6R family) Movement Type Automatic Jewels 29 Vibrations Per Hour 28,800 bph...
Manufacturer Seiko (SII, TMI) Caliber Number NH38A Movement Type Automatic Jewels 24 Vibrations Per Hour 21,600 bph Shock System? Yes...
Manufacturer Hattori aka Seiko Instruments Inc. (SII) Caliber Number VD53B Type Quartz Size 12 3/4”’ (29.5mm) Height 4.57mm thick Jewels...
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) Caliber Number VD54B Type Quartz Diameter 12 3/4”’ (29.5mm) Thickness 3.97mm Battery Cell...
Manufacturer Seiko Caliber Number NH35A (aka NH35) Movement Type Automatic Jewels 24 Vibrations Per Hour 21,600 bph Lift Angle 53...