Brand OTERO Caliber 22 (SC) Size 8 3/4x12 Function Version Hands 0,80x1,40 Stem 7507 Stem (subs.) Stem (2 pce) Balance staff 36201 (alt) Balance staff (subs.) 36203 Mainspring (subs.) 1,65x9,5x0,10 Mainspring (subs.) Battery