Patek Philippe Grand Complications Perpetual Calendar 5327R-001 self-winding mechanical watch features a 39mm 18k rose gold case surrounding a ivory lacquered dial on a dark chestnut brown alligator strap with an 18k rose gold folding buckle. Functions include hours, minutes, perpetual calendar with day, date, month, leap year indicator, and 24-hour indicator. This watch is powered by the mechanical movement Caliber Caliber 240 Q. This watch is water-resistant to 30m. This watch comes with an interchangeable solid and sapphire case backs.