Brand FHF Caliber 555 Size 11 1/2 Function Version Hands 0,90x1,30 Stem 6011 Stem (subs.) Stem (2 pce) Balance staff 29523/29530 Balance staff (subs.) 30307/30312 Mainspring (subs.) 1,20x9,50x0,11 Mainspring (subs.) Battery