PARRENIN 6640A Brand PARRENIN Caliber 6640A Size 11 1/2 Function SC Version Hands 0.70x1.20x0.18 Stem 6439 Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery 395 MovementsArtno.brandcaliberSizehandsfunctionspecial167802PARRENIN6640B11 1/20.70x1.20x0.18SC WatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem80264394000BElectronic module97240006640