Brand MIDO Caliber 916PC Size 8 3/4x12 Function CLD-AUT Version Hands 0,85x1,30 Stem 7242 Stem (subs.) Stem (2 pce) Balance staff 27804 INCA Balance staff (subs.) Mainspring (subs.) 1,35x8,5x0,09Sp. Mainspring (subs.) Battery