At the end of 2009 Patek Philippe had made the reference 7071R chronograph Caliber driven by the new CH-29 535 PS designed specifically for women, followed by two ultra-flat Major complications, a chronograph with split-seconds and a minute repeater. At Baselworld 2012, the House has added another fine timepieces: the 7071R Perpetual Calendar First Ladies, the first perpetual calendar for women.
All the details of this timepiece recall a subtle elegance, from the classic round case style 18-karat rose gold Calatrava, the bright white face cream, through the gently curved lugs, the bezel and buckle encrusted with diamonds, then the two straps in alligator mink-gray or purple that she who wears it may choose to use daily.
The diameter of 18 k pink gold case is 35.10 mm; to underline its reduced thickness (8.8 mm). Despite its small size, the Patek Philippe 7140R offers eight indications on the dial from flat Caliber 240 Q – hours, minutes, date, day, month, leap year cycle, 24 hours, and moon phases – so simple and clear. Pleasant and refined the contrast that exists between the bottom and opalescent white hands, numbers and indexes applied Breguet minute beads of 18-carat pink gold.
The bezel reflects light of 68 Top Wesselton diamonds with approximately 0.68 carats in weight. The sapphire crystal caseback reveals the feminine curiosity a partial view of the 275 elements that make up the thin mechanical movement.
Despite its complicated nature, and the presence of an oscillating weight for automatic charging, the Calibre 240 Q (Quantieme – Calendar) measures only 3.88 mm thick. All this was made possible by the adoption of a decentralized microrotor (unidirectional) 22 carat gold plate inserted in the profile.
As a rule you should all watch with a perpetual calendar complication, its mechanism is equipped with a mechanical memory of 4 years, a period of time between two leap years, exactly 1461 days. Finished this cycle count starts again. No perpetual calendar would fail the exact calculation of the month – variable length (31, 30 or 28 days) plus 29 February in leap years – until 2100, the year in the Gregorian Calendar, Secular is an exception being a leap year, but with a February 28 days instead of 29.