HATTORY-SEIKO 6138A Exploded diagram BrandHATTORY-SEIKOCaliber6138ASizeFunctionVersionHandsStem354-616Stem (subs.)Stem (2 pce)Balance staff315-611 (29823 Boley)Balance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.180Barrel with drum + cover205-5559840205555401Winding stem354-6169840354616723Balance staff ST -shock-absorber315-61180229823771Mainspring AUT sliding attachemnet401-61698404016161488Pawel winding wheel505-6130259988000BChronograph wheel ( 60s)888-61198408886118020Minute counting wheel (30m) H 747902-6110259988180BFly-back lever -zero actoon587-6119840587611