B.F.G. 730BrandB.F.G.Caliber730Size13FunctionVersionHands1,10x1,90Stem8904Stem (subs.)Stem (2 pce)Balance staff48501Balance staff (subs.)48601 / 46505Mainspring (subs.)1,5x16,0x0,16Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8028904723Balance staff, pivoted80248601723Balance staff ST -shock-absorber80248501