ETA 2401BrandETACaliber2401Size11 1/2FunctionVersionHands0,90x1,50Stem6310Stem (subs.)Stem (2 pce)Balance staff27101/ 27103Balance staff (subs.)28105/ 28030/ 28118Mainspring (subs.)1,30x10,00x0,11Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8026310410= 2390Winding pignon9200041023907212390Balance cplt. -regulated920007212472723Balance staff, pivoted80228105723Balance staff ST -shock-absorber80227101