Patek Philippe reinterprets the design of its most complicated wristwatch by offering it for the first time in a "two-tone" version combining white gold and rose gold, along with brown opaline dials. Among the 20 complications are five acoustic functions, including two patented world exclusives: an alarm sounding the programmed time and a date-repeater striking the date on demand. The reversible double-sided case is distinguished by its patented swivel mechanism, enabling it to be worn with either dial visible. This watch is accompanied by white gold cufflinks featuring a brown opaline center adorned with hand-guilloched hobnail pattern and a rose gold Calatrava cross.

Time side: brown opaline, gold applied Breguet numerals, hand-guilloched hobnail pattern. Calendar side: brown opaline. 18K solid gold dial plate. Reversible case adorned with hand-guilloched hobnail pattern. Diameter: 47.7 mm. Height: 16.07 mm. Humidity- and dust-protected only (not water-resistant). Alligator leather with square scales, hand-stitched, patinated dark chestnut. White gold and rose gold fold-over clasp. Grande and petite sonnerie. Minute repeater with classic gongs. Strikework mode display (S G P). Alarm with time strike. Alarm on/off indication. Date repeater. Patek Philippe Grandmaster Chime. Double-faced reversible wristwatch. Instantaneous perpetual calendar. Movement and strikework power-reserve indication. Strikework isolator indication. Second time-zone. Second time zone day/night indication. Instantaneous perpetual calendar. Day, date (on both dials), month, leap-year cycle by hands. Four-digit year display in an aperture. Moon phases. 24-hour and minutes subdial. Crown position indication (R A H). Movement and strikework power reserve indication. Moon phases. White gold and rose gold.

Grande and petite sonnerie. Minute repeater with classic gongs. Strikework mode display (S G P). Alarm with time strike. Alarm on/off indication. Date repeater. Movement and strikework power-reserve indication. Strikework isolator indication. Second time-zone. Second time zone day/night indication. Instantaneous perpetual calendar. Day, date (on both dials), month, leap-year cycle by hands. Four-digit year display in an aperture. Moon phases. 24-hour and minutes subdial. Crown position indication (R A H). Diameter: 37 mm. Thickness: 10.7 mm. Number of parts: 1366. Jewels: 108. Movement power reserve: 72 hours. Strikework power reserve: 30 hours. Balance: Gyromax^®. Frequency: 25,200 semi-oscillations/hour (3.5 Hz). Balance spring: Spiromax^®. Hallmark: Patek Philippe Seal.