AUD.PIQUET 2120 Brand AUD.PIQUET Caliber 2120 Size Function Version Hands Stem 4604 Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) 0.63x9.0x0.10x340 Mainspring (subs.) 82019710 Battery WatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8024604771Mainspring AUT sliding attachemnet82019710