Brand OTERO Caliber 37 Size 6 3/4x8 Function SC Version Hands 0,65x1,00 Stem 5606 Stem (subs.) 5619 lg Stem (2 pce) Balance staff 38507 (alt) Balance staff (subs.) 27507 (neu) Mainspring (subs.) 1,2x7,0x0,08 Mainspring (subs.) Battery