Patek Philippe Cubitus Perpetual Calendar Skeleton 45mm Platinum Sunburst Blue Openworked Dial (Ref# 5840P-001)

45mm platinum square-shaped case with rounded edges (measured diagonally, 10 to 4 o'clock), a thickness of 10mm and a baguette-cut diamond set at 6 o'clock, sapphire crystal case back, screw-down crown, platinum bezel, case and bezel with contrasting polished and satin finishes, sunburst blue openworked dial with a horizontal line pattern of laser-cut strips, white gold applied baton-style hour markers and white gold rounded baton-style hands with white luminescent coating, snailed counters and a metallized, laser-engraved "high-definition" moon, ultra-thin skeletonized self-winding Caliber 28-28 Q SQU measuring 28.5 x 28.5mm and 5.04mm thick with 313 parts and 27 jewels, rhodium-plated 22K gold off-center minirotor, Gyromax® balance and Spiromax® balance spring, operating at 21,600 semi-oscillations per hour (3 Hz), perpetual calendar with day, date, month, leap year and 24-hour indication by hands and moon phases, power reserve of min. 38 hours to max. 48 hours, navy blue composite strap with fabric pattern and contrasting cream stitching, Cubitus platinum fold-over clasp. Water-resistant to 30 metres / 100 feet. Patek Philippe Seal certified.