Brand ZENITH Caliber 434 Size 13 1/2 Function SC-CLD-AUT-CHR Version Hands 1,00x1,50 Stem 5824 Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) 1.22x12.5x0.146 AUT Mainspring (subs.) = 400 Battery