HATTORY-SEIKO 2201ABrandHATTORY-SEIKOCaliber2201ASizeFunctionVersionHandsStemStem (subs.)Stem (2 pce)Balance staff315-220 (26723 Boley)Balance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.4012201AHandsetting stem351-2219840351221