Manufacturer Seiko Caliber Number 6R20, 6R20A Movement Type Automatic, self-winding mechanical In-House? Yes Diameter 27.40mm (outside), 27mm (casing) Height 6.15mm...
SII
Manufacturer Hattori aka Seiko Instruments Inc. (SII) aka Time Module (TMI) Caliber Number PC21J Type Quartz Lignes 6 3/4”’ x...
Manufacturer Seiko Instruments (SII) Caliber Number NE20, NEW20A Base Caliber NE15 Movement Type Automatic Lignes 12”’ Diameter 27.40mm Casing Diameter...
Manufacturer Seiko Instruments (SII), Time Module Caliber Number NH34, NH34A Movement Type Automatic Lignes 12”’ Diameter 27.4mm (29.36mm w/ spacer)...
Manufacturer Hattori aka Seiko Instruments Inc. (SII) Caliber Number VD77, VD77A Type Quartz Lignes 10.5”’ Diameter 23.7mm Casing Diameter 23.3mm...
Manufacturer Seiko (aka Seiko Instruments, SII) Caliber Number NH72 (aka NH72A) Movement Type Automatic Lignes 12”’ Diameter 27.4mm Casing Diameter...
Manufacturer Seiko Instruments Inc. / SII / Hattori / TMI Caliber Number VH31, VH31A Type Quartz (mechaquartz) Lignes 10.5”’ Diameter...
Manufacturer Seiko Caliber Number NH36A (aka NH36) Movement Type Automatic Lignes 12”’ Diameter 27.40mm (outside) / 29.36mm (casing) Height 5.32mm...
S. Epson/Hattori caliber VR34 (VR34A) quartz chronograph watch movement. Full caliber listing coming soon....
Manufacturer Seiko (aka Seiko Instruments, SII) Caliber Number NH71 (aka NH71A) Movement Type Automatic Lignes 12”’ Diameter 27.4mm Casing Diameter...
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 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 NH25A (aka NH25) Movement Type Automatic Lignes 12”’ Diameter 27.40mm Casing Diameter 29.36mm Height 5.32mm Jewels...
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) Caliber Number NE15B Base Caliber NE15 Movement Type Automatic Diameter 27.40mm Casing Diameter 27mm Thickness 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 Instruments Inc. / SII / Hattori / TMI Caliber Number VK64, VK64A Type Quartz (mecaquartz) Lignes 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, VD53A, VD53B, VD53C Type Quartz Linges 12 3/4”’ Diameter 29.50mm...
Manufacturer Hattori aka Seiko Instruments Inc. (SII) Caliber Number VK63, VK63A Movement Type Quartz (mecaquartz) Lignes 13 1/2”’ Diameter 30.80mm...
Manufacturer Hattori aka Seiko Instruments Inc. (SII) Caliber Number PC21S Type Quartz Size 18.5mm x 3.15mm thick (overall height 4.8mm)...
