Brand JEAMBRUN Caliber 31 Size 10 1/2 Function Version Hands 0,90x1,40 Stem 7525 Stem (subs.) Stem (2 pce) Balance staff 31012 Balance staff (subs.) 31508 INCA Mainspring (subs.) 1,45x9,5x0,11 Mainspring (subs.) Battery