Among its novelties that were unveiled at the SIHH 2015 show, Jaeger-LeCoultre included a new watch based on its Duometre Spherotourbillon watch that was first presented at the same place three years ago. The novel piece, just like its predecessor, is equipped with an amazing inclined tourbillion with two axes of rotation. In addition, it also integrates a super precise moon phase indication. Even though the newcomer comes with the new added feature, it still retains the same dimensions of its platinum casing. Duometre Spherotourbillon Moon timekeeper is launched in a limited edition that consists of 75 pieces and it comes at the price of around $252,830.
The first part of the watch’s name derives from its impressive tourbillion which rotates on two separate axes with different and shorter-than-common periods of rotation (30 and 15 seconds, respectively). In addition to the axis of the tourbillon’s carriage, the supported mechanism likewise includes another 20 degrees inclined axis of rotation. Such traits enable it to be even more resilient to the detrimental effects of gravity. This feature, as we have previously mentioned, has been originally unveiled at the SIHH 2012. Unlike that previous model, the new one that saw the light of day at the 2015 edition of the Geneva has the complication further enriched with a moon phase display. Furthermore, the moon phase indication is very accurate and it requires just a single adjustment every 3887 years. Duometre Spherotourbillon Moon watch also includes a flyback seconds system which is crucial since it allows precise adjustments of its tourbillion feature within a second.
The newcomer from the Duometre lineage retains most of the aesthetical traits of its precursor. It has the same eggshell colored silvered dial and the arrangement of the indications. The tourbillion cage is once again set at the left of the dial. However, in this instance, the tourbillion opening is additionally beautified with the addition of the exposed section with the stairway effect, made in three different plains, with each being one step lower than the previous one. Moreover, the hours and minutes offset dial is also at the opposite side as it was the case with the precursor. This time, the dial also includes the golden moon phases display set on a blue background. The face of the watch additionally incorporates a small seconds counter, a 24-hour format display for hours and two power reserve manifestations. Two separate displays for the remainder of the available amount of power are caused with the fact that the watch’s caliber actually includes two separate mainsprings and the assorted gear trains, as it is the case with all of the products from the Duometre lineage. This time, the second one is used solely for its moon phases.
The specific movement used for the timekeeper is JLC Calibre 389. It is a manually-wound caliber which incorporates as much as 476 components in its construction and which beats at the frequency of 21,600 vph. Its supported power reserve measures to 45 hours. The caliber made of nickel silver with satinized finish can be seen through the transparent case-back when you flip the timepiece over. Turning the watch over also allows one to notice its two mainsprings, as well as its decorations which include a sunray motif and blued screws.
Jaeger-LeCoultre Duometre Shperotpurbillon Moon is placed inside a round platinum case whose dimensions include the width of 42 mm and the thickness of 14.1 mm. On the case-band of the housing there is a transparent section made from sapphire which is used to show the functioning of the multi-axes tourbillion even better. The watch is paired with a black alligator leather strap which fastens with a pin buckle.