B.F.G. 670BrandB.F.G.Caliber670Size13FunctionSCVersionHands1,40x2,00Stem8904Stem (subs.)Stem (2 pce)Balance staff4850Balance staff (subs.)48601 / 46505Mainspring (subs.)1.50x16.0x0.16Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8028904723Balance staff, pivoted80248601