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

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Glossary
ATM (Atmosphere)

ATM (Atmosphere)

ATM (Atmosphere) is a unit used to measure water resistance in watches. This unit indicates the watch's ability to withstand exposure to water without allowing water to enter its internal components and cause damage.

The concept of water resistance is particularly important for diving watches, as they are designed to endure the pressures they encounter during diving activities. Water resistance is usually measured in meters or ATM (Atmospheres), with each unit representing the level of pressure the watch can withstand without allowing water to enter.

For example, a watch rated as water-resistant to 50 meters doesn’t mean it can handle the pressure at a depth of 50 meters underwater. It just means the watch can resist water entering it when exposed to things like splashes, rain, or brief submersion in water. Which means the watch is suitable for daily use, but for diving, you’d need a watch with a higher rating, like 100 meters or more. Keep in mind that over time, the water resistance can weaken, so it's important to be careful.