The Traveller Large Date, Moon Phases & GMT model has been conceived by Girard-Perregaux as the latest in a long line of watch creations specifically designed with the international traveling public in mind. It is available in steel, in pink gold or in a limited edition dedicated to John Harrison to mark the 300th anniversary of the Longitude Act (the latter will be presented later on WorldTempus).
So as to ensure that the Traveller Large Date, Moon Phases & GMT offers the wearer maximum comfort, every last detail has been attended to, from the curve of its case band to the perfect alignment of its screwed-down crown. Thanks to its generous 44 mm diameter and a slim bezel combined with a deep flange, the case offers exceptional legibility. The date is displayed on the dial in an impressive aperture located at 12 o'clock. The information relating to the second time-zone are indicated in the counter situated between 4 and 5 o'clock, while the details concerning the moon phases are observed through the aperture opened into the permanent seconds counter.
The precise pattern outlined on the dial, inspired by the Earth's interlocking meridians and parallels, gives the model an outstanding feeling of volume. These lines, merging into the dial's narrow indexes, help to draw the eye to the aperture in which the moon appears. The precision of its displays and its ultra-detailed graphic treatment combine to make this watch truly unique.
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Water-resistant at up to 100 meters, the satin-brushed and polished case in steel or 18K pink gold houses the GP03300-0093 self-winding manufacture caliber. Vvisible through the transparent case-back, the movement reveals some of its components, including the oscillating weight inspired by the shape of the Girard-Perregaux tourbillon bridge, and shows the great care dedicated by the Manufacture to its finishes, all undertaken in its own workshops. Delicate but robust, this mechanism, equipped with 35 jewels and a 46-hour power reserve, beats at 28,000 vibrations per hour, to ensure the very highest accuracy in all situations.
The Large Date function
The design patented by Girard-Perregaux displays the date without separating the two numerals that make up the figure. To achieve this result, the tens disk is opaque while the numerals representing the units are positioned on a transparent disk that is only 0.10 mm thick! The superimposing of these two disks means that the 30 or 31 days of the months can be displayed in an unusual and practical format. This system is linked to an instant date-change, which means that it changes in a fraction of a second (specifically, 15/1000ths of a second).
The Moon Phase function
The indication of the moon's phases found here is highly unusual the moon is not represented by a simple gold disk on a blue background. Rather, it displays in miniature all the features of the real moon that we can observe in the sky above us on a clear night. To obtain this level of detail, the image of the heavenly body is metal-plated with a multiplicity of shades of gray on top of an extremely thin disk. This is what gives this representation its unique transparency and the impression of lightness that emanates from it. While remaining ultra-precise in functional terms, this moon is not linked to the conventional gear-train, but rather to the barrel. Thanks to its wheel with 135 indentations, this guarantees such a high degree of accuracy that it will only need to be readjusted by one day after a period of 122 years and 45 days! One of the delicate silvery stars symbolizing the night sky bears the Girard-Perregaux logo at its center, like a secret signature.
The timepiece is fitted with a large alligator-skin strap equipped with a folding clasp.
