Brand AS Caliber 1137 Size 5 1/4 Function Version Hands 0,55x1,00 Stem 5407 Stem (subs.) Stem (2 pce) Balance staff 28302 / 28303 Balance staff (subs.) 28103 INCA Mainspring (subs.) 1,50x7,5x0,08 Mainspring (subs.) Battery