Patek Philippe Calatrava Yellow Gold Grand Complications Mens Watch 5140J. Automatic self-winding movement. Perpetual calendar complication displaying the day, month, date, moon phase, leap year and 24 hours. 18k yellow gold round case 37.2 mm in diameter. Transparent exhibition sapphire crystal case back. Patek Philippe logo on the crown. . Scratch resistant sapphire crystal. Silver opaline dial with yellow gold baton hour markers, outer pearl minute markers, and dauphine hands. Weekday and 24-hour AM/PM indicator subdial located at the 9 o'clock position. Month and leap year subdial at 3 o'clock. Date and moonphase subdial at 6 o'clock. Brown leather strap with an 18k yellow gold deployant clasp.