Brand CYMA Caliber 420 (SC) Size 11 1/2 Function SC-AUT Version Hands 0,75x1,20 Stem 4904 Stem (subs.) Stem (2 pce) Balance staff 28309 Balance staff (subs.) Mainspring (subs.) 1,35x7,5x0,08 AUT Mainspring (subs.) Battery