Brand LORSA Caliber 20R Size 6 3/4x8 Function Version Hands 0,60x1,10 Stem 5404 Stem (subs.) Stem (2 pce) Balance staff 29213 Balance staff (subs.) 29225 / 30213 INCA Mainspring (subs.) 1,5x7,5x0,08 Mainspring (subs.) Battery