The Patek Philippe Calatrava is a line of dress watch

Watch

A watch is a small timepiece, typically worn either on the wrist or attached on a chain and carried in a pocket, with wristwatches being the most common type of watch used today. They evolved in the 17th century from spring powered clocks, which appeared in the 15th century. The first watches were...

es built by the premier Swiss watchmaker Patek Philippe, introduced in 1932. These watches are considered the flagship model of Patek Philippe. The least expensive of the Calatrava line for men is about $18,000 USD as of 2008.

One famous model in the Calatrava line is the 3919 which was replaced recently by the slightly larger 5119 model. This change in size reflects the growing trend for larger watches. Another famous model is the reference 96, whose modern incarnation is the considerably larger 5196. Some Calatravas (such as the modern-day 5127) feature a date function, whereas others (such as the 5196) are "time-only" watches.

Most Calatrava models have had automatic

Automatic watch

An automatic or self-winding watch is a mechanical watch, whose mainspring is wound automatically by the natural motion of the wearer's arm, providing energy to run the watch, to make it unnecessary to manually wind the watch. A watch which is not self-winding is called a manual watch...

 or manual

Mechanical watch

A mechanical watch is a watch that uses a mechanical mechanism to measure the passage of time, as opposed to modern quartz watches which function electronically. It is driven by a spring which must be wound periodically...

 movements, and some have had quartz movements.