HATTORY-SEIKO 2620B Exploded diagram BrandHATTORY-SEIKOCaliber2620BSizeFunctionVersionHandsStem354-261Stem (subs.)354-263 (lang)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryMovementsArtno.brandcaliberSizehandsfunctionspecialHATTORY-SEIKO2620B WatchpartsPart NocaliberdescriptionoriginalArtno.4060Coil -red4002- 262