After several iterations of the perpetual calendar chronographs, Patek Philippe continues to rework this complicated piece, in search of higher perfection. This latest release for their “Grand Complications” collection is the “5402G-001 Split-Seconds Chronograph Perpetual Calendar”. The interior has kept the same caliber movement, so the real novelty comes in the form of a olive green dial with a black gradation effect, similar to the new “Nautilus” dial.The 40mm case is made of 18k white gold with an overall polished finish. This design offers a mix of contemporary and classic elements, such as the elegant two-tier lugs. Mounted to the case is a concave bezel with a matching polished finish.On the flip-side is an interchangeable full back or sapphire exhibition caseback that allows a view into the inner workings of the mechanical movement. This caliber has 6 patents and as the official press-release says: “Caliber CH 29-535 PS Q is distinguished by its traditional architecture, combined with six patented innovations relating to the chronograph, as well as by its exceptionally thin calendar mechanism.”It comes equipped with two piston style push-pieces to operate the chronograph functions, while in between is a knurled screw-in setting crown.A very discreet push piece has been placed on the left-side of the case, near the 10 o’clock position, which can adjust the perpetual calendar features. Water-resistance can reach up to 30 meters (98 feet).Time is exhibited on an olive green dial with 18k white gold applied hour index markers, followed by white printed tracks with minutes and precision seconds. By doing so Patek opted to exclude the more commonly used tachymeter scale.The perpetual calendar display is laid out in a very effective and intuitive way. On the upper-half of the dial are two windows with the day of the week and month. The olive green has a sunburst finish, plus a black-gradient effect that gradually increases as it nears the periphery limits.It features a tri-compax layout with three sub-dials: a 30-minute counter at 3 o’clock, a perpetual calendar with date at 6 o’clock, and sub-seconds at the 9 o’clock position. In the midst of the perpetual calendar we can also admire a detailed moon-phase, while to its side are two round apertures for the day/night indications and the leap-year cycle.
Patek Philippe 5402G-001 Split-Seconds Chronograph Perpetual Calendar
The “Patek Philippe 5402G-001 Split-Seconds Chronograph Perpetual Calendar” (Ref#: 5204G-001) is powered by the in-house hand-wound mechanical movement, caliber CH 29-535 PS Q with 34 jewels, 496 components, and 28,800 vph. It comes equipped with a Gyromax balance, column wheel, and horizontal clutch. Power reserve can last up to 65 hours, when fully wound.Mounted on the watch is a hand-stitched olive green alligator scaled leather strap with exposed white stitching, secured to the wrist by a white gold fold-over clasp. For more up to date information visit the official Patek Philippe website here.
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