Brand FHF Caliber 2 (3 3.4) Size 3 3/4 Function Version Hands 0,55x1,00 Stem 4031 Stem (subs.) Stem (2 pce) Balance staff 28004 Balance staff (subs.) 27706 INCA Mainspring (subs.) 1,25x7,0x0,07 Mainspring (subs.) Battery