TISSOT 2780BrandTISSOTCaliber2780Size11 1/2FunctionVersionHands1,10x2,10Stem6433Stem (subs.)Stem (2 pce)Balance staff31407Balance staff (subs.)Mainspring (subs.)SepzialMainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8026433723Balance staff ST -shock-absorber80231407