Brand UNITAS Caliber 175 Size 13 Function Version Hands 0,90x1,50 Stem 8030 (Ø 0.90) Stem (subs.) 8050 (Ø 1.20) Stem (2 pce) Balance staff 31507 Balance staff (subs.) 31313 INCA Mainspring (subs.) 1,7x11,5x0,13 Mainspring (subs.) Battery