Tudor Pelagos is one of the most complete traditional mechanical divers’ watches on the market. In 2015, this emblematic model has been updated with a movement manufactured by Tudor and an additional colour combination, a reference to the most glorious period in the history of the brand’s divers’ watches.
In 2015, North Flag and Pelagos become the first Tudor models to be fitted with movements developed and produced by the brand itself. Historically, the movements used by the brand, sourced exclusively from Swiss suppliers, have always been required to achieve a high level of reliability and precision. The remit for the development of the new Tudor movements retains these high standards. The new calibre Tudor MT5612 provides the power reserve of approximately 70 hours. In addition to the hour, minute and central second functions, it provides an instant date display visible through an aperture positioned at 3 o’clock. Beating to a frequency of 28,800 beats/hour or 4 Hz, the calibre Tudor MT5612 is regulated by a variable inertia oscillator with silicon balance spring spring, held in place by a traversing bridge fixed at both sides to improve resistance to shocks and vibrations. Its self-winding system is bidirectional. And, a first for a Tudor product, it is certified by the Swiss Official Chronometer Testing Institute (COSC). This technical update of the Tudor Pelagos is accompanied by the introduction of a new colour combination for the dial, bezel and rubber strap. In addition to its original matt black version, this model is now available in matt blue, the emblematic colour of the brand’s divers’ watches since the 1960s and the one chosen by the French Navy for the Tudor Submariners that have been used in great numbers by its divers. It presents the additional distinction “CHRONOMETER OFFICIALLY CERTIFIED” written on two lines on the dial, in reference to the chronometric certification of its movement, as well as its name: “PELAGOS”.
Waterproofness of Tudor Pelages timepiece is guaranteed to a depth of 500 metres It’s equipped with a helium escape valve, an essential device for preserving the watch during so-called “saturation” dives. This technique consists of saturating divers’ organisms with a gaseous blend of helium and oxygen, allowing them to alternate periods of undersea activity with rest periods in the chamber, and therefore avoid very long decompression phases for the entire duration of their mission. As the helium atom is the smallest gas particle in existence, after a certain amount of time it is able to penetrate the interior of the watch despite its waterproofness. The helium escape valve therefore allows the gas to escape freely from the watch without damaging it during the long decompression stage in the chamber at the end of the mission. The helium escape valve accounts for this overpressure, and therefore any watch damage is avoided.
Several solutions have been adopted on the Pelagos model in order to optimise its readability. Its dial presents generously sized square hour markers, complete with a large quantity of luminous material, a guarantee of greater effectiveness that provides excellent contrast. The luminescence is blue, the last colour on the spectrum to be discernible at great depths. Its hands, particularly the hour hand with its characteristic square tip, allows the wearer to distinguish it from the minute hand at first glance. Incidentally, this configuration, often known as “snowflake” in collectors’ circles, is emblematic of Tudor divers’ watches produced from 1969 onwards. This is another way in which Pelagos fits perfectly into the brand heritage. With the same goal for optimum readability, the ceramic disc of its titanium unidirectional rotating bezel features luminous markers that allow for all information to be read even in conditions of extremely low visibility.
The Pelagos model comes with titanium bracelet featuring a steel folding clasp with a unique auto-adjustable spring mechanism developed and patented by Tudor. This technical system allows the bracelet to be adjusted during the dive through contraction when the combination is compressed due to water depth. In turn, there is reduction in volume, and conversely, expansion, when the pressure decreases again during the diver’s return to the surface. An additional rubber strap is also provided with an extension system making it easily adjustable for any type of diving conditions. Finally, titanium was chosen for the external parts of the Tudor Pelagos for its intrinsic qualities of lightness – approximately 60% of the weight of stainless steel for the same volume – and great resistance to corrosion by seawater. The highly functional matt appearance of its entirely brushed finishes, its technological overtone and its colour are also excellent ways of conveying the watch’s technological and professional design attributes. In a continuation of its external parts, the Tudor MT5612 movement that drives the Tudor Pelagos also presents matt finishes, emphasising its precision, reliability and high level of technology through large surfaces that have been sand-blasted, embellished with details or sunray-brushed, and an open worked central rotor.
Tudor Pelagos timepiece is one of 72 watches that will compete to win the prestigious “Aiguille d’Or” Grand Prix 2015 and one of six timepieces to win “Sports” category.
REFERENCE 25600TB (blue) 25600TN (black)
– 42 mm Monobloc middle case, screw-down case back and winding crown, helium escape valve at 9 o’clock
– Titanium, satin finish, case back in 316L stainless steel
– Screw-down winding crown, triple waterproofness system
– Scratch-resistant and anti-reflective crystal
– Waterproof to 500 m (1,640 ft)
– Blue or black rubber bracelet with titanium buckle
MT5612, Manufacture TUDOR
Self-winding mechanical movement with bidirectional rotor system Precision Swiss Chronometer Officially Certified by the COSC (Swiss Official Chronometer Testing Institute) Functions
Centre hour, minute and seconds hands Instantaneous date with rapid setting without non-correction range Stop-seconds for precise time setting Oscillator
Variable inertia balance, micro-adjustment by screw Non-magnetic silicon balance spring Frequency
28,800 beats/hour (4 Hz) Total diameter
31.8 mm Thickness
6.5 mm Jewels
26 jewels Power reserve
Approximately 70 hours Price