Girard Perregaux Laureato Perpetual Calendar Chronograph Watch, round 18kt pink gold case (44mm diameter, 15.1mm thickness) with see-through caseback, brown alligator leather strap with 18kt pink gold buckle, gray dial with pink gold hands, perpetual calendar, chronograph, moonphase indicator, days of the month indicator, 44 jewel Caliber #GP31C0 self-winding mechanical movement with 46 hour power reserve, scratch-resistant sapphire crystal, water-resistant to 100 meters.The perpetual calendar mechanism enables the date display to take into account the different lengths of the months automatically, including leap years: it is a mechanism based on a cam, a so-called ?twelve-cam? (which completes one rotation every 12 months), and a wheel called the ?forty-eight? (which completes one rotation every forty-eight months, or four years) enabling the inclusion of 29th February, each leap year.
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