Brand TISSOT Caliber 28.5-21 Size 12 1/2 Function SC-AUT Version Hands 0,70x1,25 Stem 7243 Stem (subs.) Stem (2 pce) Balance staff 28812 INCA Balance staff (subs.) Mainspring (subs.) 1,3x9,0x0,10Sp. Mainspring (subs.) Battery