ROLEX 4030BrandROLEXCaliber4030SizeFunctionVersionHandsStemStem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)1.24x12.50x0.146Mainspring (subs.)3077xBatteryWatchpartsPart NocaliberdescriptionoriginalArtno.771Zugfeder mit Schleppfeder (Automatik)82030770