This Patek Philippe Gondolo Calendario watch, 5135G-010, features a tonneau-shaped 18K white gold case, a sapphire crystal, a slate gray dial, and a crocodile leather strap with a white gold Deployant buckle. The Patek Philippe Ref. 5135G Gondolo Calendario timepiece utilizes an in-house manufactured automatic movement with a moon phase indicator, an AM/PM indicator, and an annual calendar with day, date, and month displays in windows. This Patek Philippe watch has a sapphire exhibition back, and is water resistant to 30 meters.