HATTORY-SEIKO 7771BrandHATTORY-SEIKOCaliber7771SizeFunctionVersionHandsStemStem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.4017771Winding stem035437398403543734017771Winding stem03543719840354371.7771TRAIN WHEEL BRIDGE01253749840125374.7771FOURTH WHEEL AND PINION02413739840241373.7771CENTER MINUTE WHEEL02703739840270373.7771Hour wheel02713739840271373.7771Setting lever03833719840383371