RONDA 5901 Brand RONDA Caliber 5901 Size Function Version Hands Stem 7248 Stem (subs.) Stem (2 pce) Balance staff 28822 Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery WatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8027248723Balance staff ST -shock-absorber80228822