OTERO 40 Brand OTERO Caliber 40 Size 10 1/2 Function SC Version Hands 0,80x1,40 Stem 7303 Stem (subs.) Stem (2 pce) Balance staff 33101 Balance staff (subs.) Mainspring (subs.) 1,4x9,0x0,10 Mainspring (subs.) Battery WatchpartsPart NocaliberdescriptionoriginalArtno.227= 40Sweep second wheel9680022740401Winding stem8027303407clutch wheel9680040740410Winding pignon9680041040723Balance staff ST -shock-absorber80233101