Caliber: Habring² A11PFunctions: Time; monopusher rattrapante chronograph with seconds and
damenuhr chronograph 30 minute register; perpetual calendar with moonphaseDiameter: 30mmThickness: 8.7mmPower Reserve: 48 hoursWinding: ManualFrequency: 4 Hz (28,800 vph)Jewels: 27Chronometer Certified: No, however
link balance spring is "chronometer
link grade" from Carl Haas