Brand CERTINA Caliber 233 Size 6 3/4x8 Function Version Hands 0,55x1,10 Stem 6307 Stem (subs.) Stem (2 pce) Balance staff 28006 Balance staff (subs.) 28710 INCA Mainspring (subs.) 1,3x8,0x0,08 Mainspring (subs.) Battery