Brand TISSOT Caliber 2551 Size 11 1/2 Function SC-CLD Version Hands 0,90x1,50 Stem 5919 Stem (subs.) Stem (2 pce) Balance staff 28111 Balance staff (subs.) Mainspring (subs.) 1.20x 9.5x0.11 Mainspring (subs.) 2950 Battery