HATTORY-SEIKO 7431A Exploded diagram BrandHATTORY-SEIKOCaliber7431ASizeFunctionVersionHandsStem354-077Stem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryMovementsArtno.brandcaliberSizehandsfunctionspecialHATTORY-SEIKO7431A WatchpartsPart NocaliberdescriptionoriginalArtno.2606922Minute wheel026149598402614954017431Winding stem035407998403540794017431Winding stem035408398403540834017431Winding stem035407798403540774000Electronic module4001-416984040014164060Coil4002-49598404002495.7431FOURTH WHEEL AND PINION02414959840241495.7431CENTER MINUTE WHEEL02704949840270494.7431Hour wheel02714939840271493.7431Setting lever03834969840383496