Cheap Patek Philippe Replica unveiled its fifth “Advanced Research” limited-edition timepiece today at Baselworld, and it’s not just a showcase for two impressive technical innovations but also an anniversary piece for the brand’s sportiest collection. Here’s what you should know about the Patek Philippe Aquanaut Travel Time.

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The Patek Philippe Replica Watches celebrates its 20th anniversary in 2017. The watch that commemorates this milestone — the Ref. 5650 Aquanaut Travel Time “Patek Philippe Advanced Research” — has an 18K white-gold case measuring 40.8 mm in diameter and 11 mm thick and water-resistant to 120 meters. It is equipped with the cleverly conceived dual time-zone function that Patek has used in previous models such as the Calatrava Pilot Travel Time and Nautilus Travel Time, and its self-winding movement features, for the first time, two major technical innovations: an optimized Spiromax balance spring with an inner boss; and the so-called flexible mechanism for the time-zone settings. The watch will be issued in a limited edition of 500 pieces.

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The watch contains Patek’s automatic caliber 324 S C FUS, which in this model has been enhanced with two innovations developed by the Patek Philippe Advanced Research laboratory. The first is the Spiromax balance spring made of Silinvar, which is equipped with two terminal curves and optimized with an inner boss. It improves the isochronism of the balance in the vertical orientations of the watch. As a result, its rate accuracy ranges between -1 and +2 seconds per day — similar to the precision of Patek Philippe Replica tourbillon watches.

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The second innovation involves the time-zone setting device, which replaces the usual pivoting articulations with so-called “compliant” or flexible mechanisms. This device, which is composed of only 12 filigreed steel parts with several intersecting leaf springs — as compared to the 37 parts used in the more traditional mechanism — transmits the actuations of the two time-zone pushers to the local time display.

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As on other Travel Time watches in other Patek Philippe Replica Watches families, this Aquanaut displays the local time and date as well as a second time zone and a day/night indicator for both time zones. Two pushers in the left-hand case flank control the settings. On trips across several time zones, the local time hour hand can be adjusted forward or backward in one-hour steps. In the process, the day/night indicators and, if applicable, the date are also changed. When the owner is headed east, the local time is set with the pusher at 8 o’clock. The pusher at 10 o’clock corrects the local time on westbound trips.

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The Cheap Patek Philippe Replica Advanced Research”is mounted on a night-blue strap, with an embossed pattern that echoes that of the dial, made of a water-resistant composite material. It fastens with a three-part foldover clasp in 18k white gold.

Cheap Patek Philippe Replica, which famously gave the world its first wristwatch with a perpetual calendar in 1925, reached into its prestigious history with that complication to inspire the new Ref. 5320G, launched at Baselworld 2017. While much post-Basel attention has been justifiably paid to Patek’s technically groundbreaking “Advanced Research” piece, the Aquanaut Travel Time Ref. 5650G, this new perpetual calendar timepiece and its “retro-modern” design should not be overlooked.

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The Patek Philippe Ref. 5320G Perpetual Calendar bears the vintage influence of several historical predecessors, including that groundbreaking 1925 model — a unique piece dubbed 97’975, and currently part of the collection at the Patek Philippe Replica Watches— as well as several other perpetual calendar watches from the 1940s and 1950s, most of which make only rare appearances nowadays, usually on the auction block. Patek first integrated the perpetual calendar wristwatch into its regular collection in 1941 with the introduction of Ref. 1518, a watch that combined a perpetual calendar with a chronograph. A year later, Ref. 1526, a model without a chronograph function, debuted. Both pieces pioneered the distinctive dial design that still today defines Patek Philippe Replica perpetual calendar timepieces: a double aperture directly below 12 o’clock for the day and month displays, and a subdial at 6 o’clock with a moon-phase indicator surrounded by an analog date display. This watch, with its historical-looking cream-colored lacquer dial, adds a few new, subtle elements to this classical layout: a small, round day-night aperture between 7 and 8 o’clock and a round aperture for the leap-year cycle, with Arabic numerals from 1 to 4, between 4 and 5 o’clock. Other familiar elements include the applied gold Arabic numerals and five-minute cabochons with luminous coating, fine-tipped baton hands filled with Super-LumiNova, a thin, counterbalanced sweep seconds hand; and the graduated seconds scale around the dial’s perimeter.

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The watch’s manufacture movement is Caliber 324 S Q, based on Patek’s self-winding Caliber 324, which is powered by a large rotor in 21K gold. On the dial side are four disks for the perpetual calendar displays, each rotating at its own rate inside its dial aperture: the day disk, at one revolution per week; month disk, at one revolution per year; leap year disk, at one full cycle over eight years; and the day/night disk, at one rotation per day. The moon-phase disk, behind the analog date at 6 o’clock, requires only one single-day correction every 122 years — which corresponds to a miniscule daily error of 0.02 per mil. The other side of the movement boasts the array of haute horlogerie finishes and technical refinements for which Replica Watches has become renowned: bridges with round-chamfered and polished edges; Geneva striping; gold-filled engravings, screws with polished, chamfered slots in bores with polished countersinks; a Gyromax balance with Spiromax balance spring made of high-tech Silinvar; and the aforementioned solid-gold rotor, suspended between ball bearings and decorated with perlage, circular graining, and an engraved Calatrava cross. Like all modern Patek Philippe calibers, this one meets the strict precision and quality criteria of the Cheap Patek Philippe Replica seal, meaning, among other things, that its maximum rate deviation ranges between -3 and +2 seconds per day.

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Further demonstrating Patek’s attention to detail, and adherence to this watch’s heritage, even the design of the lugs comes from a 60-year-old predecessor. The Patek Philippe Replica Watches introduced the prominent, three-tiered, lug profile revived in the Ref. 5320G, which — in combination with the flat case middle, the beveled, polished bezel, and the overarching, curved crystal — makes for an elegant silhouette on the wrist. Also, a bonus for those who prefer an even more vintage-appropriate style: the watch comes with a solid white-gold caseback that can be swapped with the sapphire exhibition back.