Renowned for its horological mastery and its creative talent, Jaeger-LeCoultre now wishes to share the fruits of its expertise with a broader public. This is why it is introducing an original collection with a pure, uncluttered design, driven by a new Haute Horlogerie calibre encapsulating the inventive spirit of the Manufacture. Geophysic® line reveals its gripping story, so that we can better tell our own. The first glance reveals a clean-cut design that is the epitome of elegance and equilibrium. Each model in the Geophysic® line features several layers of meaning. It gradually unleashes a powerful and innovative horological content expressed through classic characteristics. This refined and contemporary creation asserts its masculine nature in a number of subtle ways. The collection is named after a watch that belongs both to universal history and to the heritage of the Manufacture. In 1958, the International Geophysical Year, Jaeger-LeCoultre created a chronometer for scientists on mission. Capable of withstanding the magnetic fields of the North Pole while losing nothing of its formidable precision, its overriding characteristic was extreme resistance. Whether in True Second® or Universal Time versions, the Geophysic® conveys a constant intensity. 

It cultivates an attitude entirely in tune with the times. The message of the Geophysic® is one of simplicity and complexity co-existing in perfect harmony. The movements driving the Geophysic® collection, automatic Jaeger-LeCoultre Calibres 770 and 772, are synonymous with high precision and mechanical beauty. These calibres called upon the talents of the most highly specialised engineers of the Research & Development division within the Manufacture. The strength of their expertise and their imagination drives their authentic capacity for innovation. The latter is in this instance expressed by an atypical balance wheel featuring a non-circular configuration that required lengthy research in order to reduce air friction. Named the Gyrolab®, this device was initially developed in a laboratory version back in 2007 to equip the Master Compressor Extreme Lab 1 watch. It took eight years to transition from this confidential version to one that could be incorporated into an entire watch line. Geophysic® is the first collection to enjoy the full benefits of this key breakthrough and its determining influence on the precision of the watch.

Hypnotic fascination

The world map on the face of the Geophysic® Universal Time, equipped with Jaeger-LeCoultre Calibre 772, exercises an almost hypnotic fascination. So distant and yet so close, the continents stretch out like an open travel invitation. The sea is depicted by subtly graded lacquered shades of blue, while the engraved continents are graced with a magnificent sunburst finish.

The endlessly admirable planisphere remains in a fixed position, which means it can host the hour-markers. The compelling Geophysic® Universal Time enables simultaneous readings of the time in all 24 time zones by means of its mobile disc.


The city disc with its perfectly readable names is fixed so as to help users get their bearings. The eye soon becomes accustomed to seeing London at 6 o’clock and Hong Kong at 2 o’clock. Epitomising an absolute determination to promote simplification, the time is adjusted via the crown and no longer with a pushbutton.

Once the universal time has been set, there is no need to adjust it while crisscrossing the world. Travellers need only adjust their own time. Local time is automatically adjusted simply by moving the hour hand forwards or backwards, independently of the minutes and seconds to as to avoid any loss of precision.


This precision is also expressed by the true seconds system that causes the seconds hand to move forwards while “beating the second”, meaning by performing a jump every second. This is no ordinary feat for a mechanical movement, and one that does not disturb the smooth running of the watch. 

True seconds mechanism involves an extremely sophisticated construction whose effectiveness is expressed on the dial by a pleasantly rhythmical reading of the seconds. This specific expertise, which has been mastered by the Maison since the 19th century, testifies to the authentic instrument-worthy nature of the Geophysic®.


The remarkable calibres driving the Geophysic® line are the first to feature an oscillating weight – crafted from a single block of solid gold – bearing the ‘anchor’ motif (itself echoing the shape of a escapement lever) that is also the Jaeger-LeCoultre logo. Strategically cut out and more open than a classic weight, it enables the eye to reconstruct the movement that it generously reveals in the course of its rotations.

These calibres exude a resolutely technical aura, much like a car engine built to ensure optimal performance. They deliver a degree of reliability and precision certified by the rigorous “1000 Hours Control” that Jaeger-LeCoultre is the only Manufacture to implement. Despite the sophisticated nature of these mechanisms, they are both functional and easily adjustable by merely positioning the crown. Here, Jaeger-LeCoultre transposes the philosophy of the namesake historical model into a resolutely contemporary watch.


Reference Q810 25 20 Case: pink gold, Ø 41.6 mm mm, 11.84 mm thick. Dial: blue-lacquered, applied hour-markers. Hands: baton-type, enhanced with Super-Luminova®. Movement: mechanical automatic Jaeger-LeCoultre Calibre 772, 40-hour power reserve, 28,800 vibrations per hour, 274 components. Functions: hours, minutes, true seconds, world time. Strap: alligator leather, pin buckle. Water resistance: 5 bar.

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