HATTORY-SEIKO 2639A Exploded diagram BrandHATTORY-SEIKOCaliber2639ASizeFunctionCLDVersionHandsStem354-260Stem (subs.)354-262 (lang)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.4060Coil -red4002-261025998