Brand CERTINA Caliber 28-551 Size 12 1/2 Function SC-CLD-AUT Version Hands 0,90x1,50 Stem 7538 Stem (subs.) Stem (2 pce) Balance staff 30905 Balance staff (subs.) Mainspring (subs.) 1,25x9,5x0,10Sp Mainspring (subs.) Battery