The Patek Philippe Perpetual Calendar is designed in a 40mm 18k white gold case and smooth satin-finished octagonal bezel. The sporty blue dial hosts white-gold applied hour markers and three Perpetual Calendar sub-dials at 3, 6, and 9 o'clock, respectively. Complications include day, date, month, leap year, and 24-hour indication. Patek's thinnest Perpetual Calendar yet, this sporty and sleek timepiece settles nicely on the wrist. This particular model includes the iconic branded dial settled just above the Moon Phase sub-dial.