Brand B.F.G. Caliber 680 Size 13 Function SC Version Hands 1,40x2,00 Stem 8904 Stem (subs.) Stem (2 pce) Balance staff 48501 Balance staff (subs.) 48601 / 46505 Mainspring (subs.) 1,5x16,0x0,16 Mainspring (subs.) Battery