Brand MÜLLER-SCHLENKER Caliber 1 Size 18 Function Version Hands 0,60x1,90 Stem 13003 (kz) Stem (subs.) 13004 (lg) Stem (2 pce) Balance staff 41801 Balance staff (subs.) Mainspring (subs.) 2,0x18,0x0,23 Mainspring (subs.) Battery