Patrimony Traditionnelle openworked perpetual calendar

Movement

• Reference: 1120 QP SQ
• Thickness (mm): 4.05
• Diameter (mm): 29.60 (12''' ½)
• Number of parts: 276
• Energy: automatic
• Number of jewels: 36
• Frequency: 2.75 Hz (19'800 v.p.h.)
• Power-reserve (hours): 40 approx.
• Indication: hours, minutes, perpetual calendar (hand-type calendar, day of the week, month, leap year, moon phases)
• Remark: openworked movement
• Certification: 
  Hallmark of Geneva