Manufacturer Seiko Caliber Number 5S21, 5S21A Movement Type Quartz Diameter 24mm Casing Diameter 23.3mm Height 2.2mm (2.3mm with battery) Jewels...
Smooth Quartz
Manufacturer Seiko Instruments Inc. / SII / Hattori / TMI Caliber Number VH31, VH31A Type Quartz (mechaquartz) Lignes 10.5”’ Diameter...
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