TISSOT 17.2R-21BrandTISSOTCaliber17.2R-21Size7 3/4FunctionSC-AUTVersionHands0,70x1,20Stem5519Stem (subs.)Stem (2 pce)Balance staff27809Balance staff (subs.)Mainspring (subs.)1,3x6,5x0,07Sp.Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8025519424= ETA 2360Intermediate crown wheelH= 240920002422361723Balance staff ST -shock-absorber80227809