HATTORY-SEIKO WWW1BrandHATTORY-SEIKOCaliberWWW1SizeFunctionVersionHandsStemStem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401WWW1Winding stem03515469840351546401WWW1Winding stem03511349840351134