Brand OMEGA Caliber 160 .38.5-T1) Size 16 1/2 Function KlS Version Hands Stem Stem (subs.) Stem (2 pce) Balance staff 40901 Balance staff (subs.) DCN 204 , RONDA 1862 Mainspring (subs.) 2.10x14.5x0.18 Mainspring (subs.) Battery