LONGINES 25.17ABCBrandLONGINESCaliber25.17ABCSize8 3/4x11FunctionVersionHandsStemDCN 2378Stem (subs.)DCN 1121Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.410Winding pignon420Crown wheel443Setting lever assembled705Escape wheel -pinion straigt piv.721Balance cplt. -regulated