Brand OTERO Caliber 73 Size 10 1/2 Function SC Version Hands 0,80x1,40 Stem 6012 Stem (subs.) 6035 (TU) Stem (2 pce) Balance staff 28025 Balance staff (subs.) Mainspring (subs.) 1,2x9,0x0,095 Mainspring (subs.) Battery