ROLEX 1220BrandROLEXCaliber1220SizeFunctionVersionHandsStemStem (subs.)Stem (2 pce)Balance staffeigenBalance staff (subs.)Mainspring (subs.)1.55x9.00x0.104x360Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.7231200Balance staff ST -shock-absorber981007231200770BMainspring (Generic)981007701220