Welcome to my Top Swiss Chronographs Boutique! Manufacture Jaeger-LeCoultre SA is Swiss luxury watch manufacturer founded by Antoine LeCoultre in 1833, based in Le Sentier, Switzerland. It has hundreds of inventions, patents, and more than one thousand movements to its name, including the world's smallest movement, one of the world's most complicated wristwatches (Grande Complication), and a timepiece of near-perpetual movement; in short, Jaeger-LeCoultre is one of the biggest names in the watchmaking world. The earliest records of the LeCoultre family in Switzerland date from the 16th century, when Pierre LeCoultre (circa 1530 – circa 1600), a French Huguenot, fled to Geneva from Lizy-sur-Ourcq, France to escape religious persecution. In 1558, he obtained the status of “inhabitant” but left the following year to acquire a plot of land in the Vallée de Joux. Over time, a small community formed and in 1612, Pierre LeCoultre's son built a church there, marking the founding of the village of Le Sentier where the company's Manufacture is still based today. In 1834, following his invention of a machine to cut watch pinions from steel, Antoine LeCoultre (1803-1881) founded a small watchmaking workshop in Le Sentier, where he honed his horological skills to create high-quality timepieces. In 1844, he invented the world's most precise measuring instrument at the time, the Millionomètre, and in 1847 he created a keyless system to rewind and set watches. Four years later, he was awarded a gold medal for his work on timepiece precision and Mechanization at the first Universal Exhibition in London. In 1866, at a time when watchmaking skills were divided up among hundreds of small workshops, Antoine and his son, Elie LeCoultre (1842-1917), established the Vallée de Joux's first full-fledged manufacture, LeCoultre & Cie., pooling their employees’ expertise under one roof. Under this set-up, they developed in 1870 the first partially mechanised production processes for complicated movements. By the same year, the Manufacture employed 500 people and was known as the “Grande Maison of the Vallée de Joux”, and by 1900, it had created over 350 different calibres, of which 128 were equipped with chronograph functions and 99 with repeater mechanisms. From 1902 and for the next 30 years, LeCoultre & Cie. produced most of the movement blanks for Patek Philippe of Geneva. In 1903, Paris-based watchmaker to the French Navy, Edmond Jaeger, challenged Swiss manufacturers to develop and produce the ultra-thin movements that he had invented. Jacques-David LeCoultre, Antoine's grandson who was responsible for production at LeCoultre & Cie., accepted the challenge, giving rise to a collection of ultra-thin pocket watches, including the thinnest in the world in 1907, equipped with the LeCoultre Calibre 145. The same year, French jeweller Cartier, one of Jaeger's clients, signed a contract with the Parisian watchmaker under which all Jaeger movements for a period of fifteen years would be exclusive to Cartier. The movements were produced by LeCoultre. Edmond Jaeger also acquired the patent for the atmospherically driven clock Atmos from its inventor Jean-Léon Reutter and licensed it to LeCoultre from 1936 for France, and in 1937 for Switzerland. The collaboration between Jaeger and LeCoultre led to the company being officially renamed Jaeger-LeCoultre in 1937. Before that, LeCoultre of Switzerland and Jaeger of France also formed a company in England, Ed. Jaeger (London) Limited, in 1921 to make instruments for prestige car manufacturers. In 1927 Jaeger LeCoultre sold 75 per cent of the company to S Smith & Sons and in 1937 the company name was changed to British Jaeger Instruments Limited. The 1930 Bentley Speed Six also features gauges made by Jaeger and a clock by S. Smith & Sons. Since Jaeger-LeCoultre's founding, the company has produced over 1,242 different calibres, registered approximately 400 patents and created hundreds of inventions. With its compressor key system the manufacture Jaeger-LeCoultre invented a practical alternative to the conventional screw-in crown Even with a single half-turn of the compression key, the crown can be fully opened or closed; when closed, complete sealing is attained by the pressure on a cone located inside. Both states are clearly indicated by red and white arrows. So you do not have to remember, as with the old system, how tight you have to turn or to test back and forth until the screw engages. Since the first introduction of this invention, from the first models equipped with it a whole series of watches is derived, which includes sports models and also dive watches, for women and for men respectively. Movement: - in-house automatic 751F calibre - 277 parts - 1000 hours - 65 hours power-reserve - 39 jewels - vibrations: 28.800A/h - twin barrel Case: - 316L stainless steel - polished/fine brushed - 41,6mm excl. crowns; 47,4mm incl. crown - 13,1mm thick - length: 49,8mm lug to lug - unique No: 2*****8 (for buyer only), best confirmation of authenticity Case-back: - solid pink gold, engraved - screwed down with 4 screws Bezel: - 316L stainless steel - polished - multilayer - fixed - tachymeter around inner rim Anti-reflective sapphire crystal Crowns: - polished stainless steel, with raised logo shield - open (white) and closed (red) with special safety system - two screwed down chronograph pushers, polished Dial: - black matte - polished luminescent hands, Arabic numerals and stylish hour batons - date aperture at 04:30 o'clock, fast circuit - red central chronograph second hand - three chronograph sub-dials: 30 min. counter at 03:00 o'clock with red hand small seconds at 06:00 o'clock stylish 12 hours counter at 09:00 o'clock - minutes and seconds markers around outer rim - Jaeger-LeCoultre logo at 12:00 o'clock Bracelet: - 316L stainless steel - polished - length: ca. 22cm incl. wristwatch itself - width: 21mm by lugs, 20mm by clasp - extremely comfortable on the wrist thanks to small links Clasp: - 316L stainless steel - fine brushed - double folding "butterfly" - 4 security pushers - with Jaeger-LeCoultre logo Water-resistant: 10ATM/100meters/330feet Weight: 186 grams Distinctive design. High recognition value. Excellent condition, never worn: the wristwatch comes from luxury watch-shop showcase. General professional pre-sale service was made in December 2025: the watch is keeping good time and working perfectly. Chic wooden Jaeger-LeCoultre watch box (see pics). Distributor's stock: the card isn't stamped. For watches older than two years, “original warranty” means that the warranty card is included. My personal authenticity and quality warranty: you will get warranty card (as pictured), fully completed, stamped and signed. Insured, registered shipping worldwide with DHL Express: it’s not cheap, and yet fast and reliable, two days in Europe, three days worldwide. Everything you see in my pics is included in the package that you'll receive. It asserts itself in the sports world thanks to the first Jaeger-LeCoultre automatic chronograph movement. The patented compression key system has been adapted so as to be incorporated within the chronograph push-buttons. The inner ring displays the tachometric scale enabling one to measure the average speed of travel. NO EXTRA COSTS for EU Buyers!