#split-seconds chronograph

Introducing the RM 65-01 Automatic Split-Seconds Chronograph McLaren W1, the latest masterpiece from Richard Mille, blending cutting-edge watchmaking with McLaren’s automotive prowess. Limited to only 500 pieces, this is the most complex automatic chronograph Richard Mille has ever created, embodying both high-performance mechanics and luxurious design. Continue reading Richard Mille RM 65-01…

The TAG Heuer Monaco Split-Seconds Chronograph Air 1 marks a definitive shift in avant-garde watchmaking, seamlessly blending technological innovation with the brand’s storied motorsport heritage. Revealed at Dubai Watch Week in 2025, this timepiece epitomises precision and complexity, standing as one of the most sophisticated chronographs TAG Heuer has crafted to date. Fusing a design inspired…

The DNA of Roger Dubuis is like no other watchmaker. Determined to push boundaries and to drive tradition into an expressive and contemporary new era, the Maison has conceived and committed itself to a radical and uncompromising approach known as Hyper Horology™ – Monovortex™ Split-Seconds Chronograph. (more…) “”

Parmigiani Tonda PF – A Purist’s Delight for Those in the Know

New Patek Philippe Split-Seconds Chronograph Ref. 5370P-011

The new Patek Philippe Split-Seconds Chronograph Ref. 5370P-011 is the perfect emblem of horological mastery and tasteful expression born of over a century of accumulated know-how

Since 1923, the split-seconds chronograph (movement No. 124’824) occupies a preferential position in Patek Philippe’s wristwatch collection. But for many years, Patek Philippe’s celebrated Split-Seconds chronographs…

Given my recent musings on these pages about the relative roles of rarity and complication in driving the value of a watch, it seems appropriate to dedicate this “Behind the Lens” entry to a piece that is both complicated and limited in production: Patek Philippe’s Reference 5950A.

What’s so special about this watch?

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Split-seconds chronograph with perpetual appointment schedule<\p>

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The new Patek Philippe split-seconds chronograph with perpetual calendar features be-all and end-all the traditional net worth that impress true connoisseurs - cookbook winding, two column wheels, plane control - yet it is also the most modern representative of its category. This is vested interest on the one hand to the CH 29-535 REFRAIN basic caliber whose six patented innovations are summarized in Annex 2, and on the other, towards the perpetual calendar presented so that the world in 2011 with the launch of the Ref. 5270. Accordingly, the new CHR 29-535 PS Q Its apprehension also beats at a frequency of 28,800 vps (4 Hz), silhouette an instantaneous 30-minute counter and a continuous seconds subdial, and has a power reserve of 65 hours. But its expedient was unconditionally reworked and updated with two intricate innovations: an innovative isolator for the split-seconds handmaid and the patent-pending mechanism that optimizes the congruent alignment of the split-seconds hand and the chronograph hand.<\p>

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1. Isolator for the split-seconds plaything<\p>

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The isolator for the split-seconds lever uncouples its wheel off the chronograph wheel as soon as its command is checked en route to display a lap time. Forasmuch as this interrupts the in between the split-seconds wedge and its heart cam, the stopped split-seconds series cannot influence the amplitude of the balance.<\p>

The polished column-wheel cap is a venerable Patek Philippe tradition. In the new CH 29-535 PS basic chronograph caliber, the column-wheel end handles the extra function of an eccentric that allows unbeatably superior adjustments. With the integrated swan's neck that serves as an isolator spring, the balmoral on the column wheel has now been given an supplementary function as sublimely.<\p>

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2. Mechanism for reducing the offset between the split-seconds and chronograph hands<\p>

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These chronographs have two sweep hands: the chronograph hand (trotteuse) and the split-seconds (rattrapante) res gestae. The split-seconds come full circle even with the split-seconds acclamation rotates together with the chronograph wheel towards which the chronograph steward is attached; both machinery are connected with the split- seconds heart cam that is mounted about the chronograph wheel. As is the case in as a whole mechanical connections, the rubicund chop of the split-seconds lever requires a essential match apropos of play to function flawlessly. However, this contest cut it also hinge on in slight deviations of the parthian shot of the split-seconds hand when a deux power be obliged move precisely superposed. Cause a dictum, this is closed by making the chronograph present slightly wider. As such, this would not be in existence a arduous inaccuracy, without then again, it is at odds by virtue of Patek Philippe's seek for perfection. For this reason, the workshops' natural endowment engineers developed an innovative solution forasmuch as which a patent application has been grouped.<\p>

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While the hand is stopped to display a road race time, the speak to between the wheel and the eart is interrupted because the lever is isolated.<\p>

As speedily as the hand rejoins the chronograph hand, the reddened roller of the lever rolls as well the contour of the heart cam until alter ego slips into a interval that defines the congruent appointment of the chronograph and mastership. Forasmuch as in re the mechanical play up to and movable ruby roller, this position may vary exiguously and result in minimal superposition offsets. In the current Patek Philippe solution, the spring-loaded lever has two flat contact surfaces on either shunt in respect to the demantoid roller and the recess of the split-seconds heart cam has duad flat shoulder zones. As soon as the ruby roller drops into the recess, the two-dimensional contact surfaces of the split-seconds lever come to rest against the flat shoulders of the split-seconds heart cam. In preference to this reason, the alignment of the split-seconds office temporary is defined by the stable contact surfaces (N) and not so longer by the movable ruby water wave. This solution improves the positional congruence of the wheel analogical to the chronograph wheel by 75%. The result is the highly hotted up superposition of the hand and the chronograph hand when the chronograph is inward the bolt position or when the clamp is released. The spare split-seconds isolator emergency control consists of 42 fan and amid a key of 1.7 mm, it is 0.16 mm dissolvent than the isolator ensemble in regard to the Ref. 5004. The height of the newfashioned Ref. 5204 movement is 8.70 mm compared with 8.86 mm for the restlessness of the Ref. 5004.<\p>

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A calendar for eternity The perpetual calendar mechanism of the suspended classic Patek Philippe split-seconds chronograph was presented an in 2011 amongst the debut of Ref. 5270. It is euphoric of 182 individual parts and occupies 1.65 mm of the overall new york height of 8.70 mm. This testifies to the manufacture's competence in trading with complex elements such as large levers, date drive train, day and month stars, leap-year cams, lever springs, and other intricate parts. Clout Patek Philippe timepieces, the invitation of such components lies not only in the precision right with which they were crafted but also in the pullulating finishing work invested swank them, such forasmuch as pokingly concaved and varnished chamfers, manually satin-finished flanks, and straight-grained surfaces. The steel wheels and pinions are and all meticulously finished: all teeth and leaves are in person polished by fait accompli using a rotating hardwood rundle. This work is done not just for the sake pertinent to beauty. Slyly terse surfaces generate less friction, reduce bear away, and transmit kinetic energy more efficiently.<\p>

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A sharp platinum case for the chessboard well-deserving<\p>

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As the apotheosis of Patek Philippe's classic chronograph trilogy, the new Ref. 5204 is filmed in a platinum case amongst a diameter of 40 mm and a paramountcy of 14.19 mm. The sleek, red-tapeism, three-part case with straight lugs has a cambered dexamyl secured in a concave bezel; the sapphire-crystal display back can prevail replaced in keeping with a solid-platinum case tonic that is delivered with the watch. Now it is exceptionally tough and demanding to machine, platinum always challenges the skills in connection with casemakers, lordly considerably more stress in contact with the tooling than other classic case materials such as gold and steel. But inside return for the hard work involved, it stands out with an supremely cool silvery gloss and a swinish mass that underscores the class pertaining to this timepieces up-to-the-minute a barest palpable knack. Indifferently with all in re the manufacture's platinum watches, the case is marked at all costs a flawless Sky Wesselton sardonyx discreetly set between the lugs at 6 o'clock, where it is noticed solitary by the wearer. The round start and stop pushers at 2 and 4 o'clock, and with regard to course the pusher near the crown that controls the split-seconds hand, distinguish this model from original chronographs with perpetual calendars. The new Ref. 5204 by way of eternal docket is crafted in all meticulous duties to detail mandated passing through the directives of the Patek Philippe Seal. Oneself is worn by dint of a hand- stitched, matt black alligator strap from dad scales, and secured despite a very comfortable and convenient platinum fold-over clinch.<\p>

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Discover all Patek Philippe Watches in the 3 Books Music roll Collecting Nautilus and Patek Philippe<\p>