Patek Philippe Grand Complications Perpetual Calendar Chronograph 41mm Platinum Lacquered Black Dial Diamond Bezel (Ref# 5271P-010)

41 mm platinum case entirely polished with a concave bezel and two-tier lugs, pushers satin-finished on the sides and polished on top, a diamond set at 6 o'clock, and a sapphire crystal case back. Bezel and lugs set with 58 baguette-cut diamonds (4 cts), one baguette-cut diamond hour marker (0.02 ct) and a clasp set with 22 baguette-cut diamonds (0.99 ct), for a total of 81 baguette-cut diamonds (5.01 cts). Lacquered black dial with white gold applied faceted baton-style hour markers and one baguette-cut diamond at 12 o'clock, white gold leaf-shaped hands, and a tachymeter scale printed in white. Manually wound caliber CH 29-535 PS Q, 32 mm in diameter and 7.00 mm thick, with 456 parts and 33 jewels, beating at 28,800 semi-oscillations per hour (4 Hz) with a Breguet balance spring. Functions: chronograph with central chronograph hand and instantaneous 30-minute counter, perpetual calendar with day, month, leap year and day/night indication in apertures, date by hand, moon phases, and small seconds. Power reserve with the chronograph disengaged of min. 55 hours to max. 65 hours. Shiny black alligator leather strap with square scales, hand-stitched, with a platinum fold-over clasp set with diamonds. Water-resistant to 30 metres / 100 feet. Patek Philippe Seal certified.