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The New Patek Philippe Twenty~4 7340/1R Perpetual Calendar

Introduced in 1999, the Twenty~4 collection was Patek Philippe’s first dedicated line of feminine timepieces. The original model featured an Art Deco-inspired manchette (cuff) design, but in 2018, the brand unveiled the Twenty~4 Automatic, which is a round-cased iteration powered by an automatic movement. This year, Patek Philippe elevates the collection further by introducing a perpetual calendar complication, marking the collection's debut in the realm of Grand Complications.
Crafted entirely in 18K rose gold, the watch features a 36mm case with a slender profile of just 9.95mm, making it sit gracefully on the wrist. The case is meticulously finished with a combination of polished and brushed surfaces, enhancing its refined aesthetic. Two dial options are available. The Ref. 7340/1R-001 features a silvery opaline dial with a vertical satin finish, evoking the texture of shantung silk that feature irregular texture, while the Ref. 7340/1R-010 presents an olive green sunburst dial for a more contemporary appeal.

Glossary

Altimeter

An altimeter is a device that measures altitude or elevation above sea level. It is commonly used in aviation, mountaineering, and other outdoor activities to help determine one's location and to aid in navigation.

An altimeter can work based on various principles, such as barometric pressure or GPS technology. A barometric altimeter measures altitude by measuring the atmospheric pressure, which decreases as the altitude increases. The device contains a small aneroid barometer that expands or contracts with changes in air pressure, which moves a needle on the display to indicate the current altitude.

Altimeters are commonly found in watches designed for outdoor activities, as well as in dedicated handheld devices used by hikers, climbers, and pilots. They often include additional features, such as temperature readings and weather forecasting.

Mechanical wristwatches with altimeter features are relatively rare, as most altimeter watches use electronic sensors to measure altitude.