Brand T.E. (TECHNIC EBAUCHES) Caliber 10 Size 5 1/4 Function Version Hands 0,55x1,00 Stem 5003 Stem (subs.) Stem (2 pce) Balance staff 30701 Balance staff (subs.) Mainspring (subs.) 1,3x7,5x0,09 Mainspring (subs.) Battery