Brand LONGINES Caliber 963 Size 3 3/4x8 ( Normflatl. ) Function Version Hands 0,55x1,00 Stem 4202 Stem (subs.) = 280.001 Stem (2 pce) = 280.001 ( eigen ) pos. Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery 321