Reference 5110 was introduced in 2000 and remained in production until 2006, leaving room for reference 5130. The present watch, made in platinum has a classic Calatrava case, the blue guilloche dial and a revolving ring with 24 city names. This elegant watch, icon of the Patek brand, allows the wearer to keep track of both local and home time with the click of a button located at 10 o'clock.
Worldtime wristwatches were invented, like most innovations, by necessity. With the advent of the industrial age, global trade and travel have arrived around the world, and as a result, the need for time measuring devices that can follow the time in multiple places has been felt.