A Renewed Commitment to Precision and Reliability in Watchmaking
At the Jaeger-LeCoultre Manufacture, innovation is a never-ending quest. In this spirit, we are introducing a significant new feature for our timepieces: the new HPG (High Precision Guarantee) hallmark. At the heart of our Master Control Chronometre collection, this exclusive hallmark sets a new standard, reflecting a refined aesthetic and chronometric reliability tested in accordance with a rigorous, patent-pending protocol.
High Precision Heritage: The Return of the HPG
The name HPG is not new to Jaeger-LeCoultre. It echoes the Maison’s history, having featured on the dials of our watches since 1970, particularly those fitted with the Calibre 916 – our cutting-edge 4 Hz movement, famed for its high precision. Today, we continue this historic commitment with a modern approach, tailored to the demands of the 21st century.
An HPG Certificate of Excellence: Rigorous Testing
The HPG hallmark is based on a comprehensive assessment, during which each watch is subjected to demanding conditions designed to replicate the rigours of everyday life. Our patent-pending protocol allows performance to be assessed on the basis of four key factors:
- Altitude: The calibre is tested under a variety of atmospheric pressures simulating conditions ranging from sea level up to 1,004 metres, the altitude of our Manufacture.
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- Multidirectional Impacts: In its case, the watch is subjected to shocks ranging from 25G to 50G, applied systematically across standardised positions, to ensure durability in everyday use.
- Positions: The movement, once fitted into the case, is assessed through alternating periods of multi-position and fixed-position testing, examining its accuracy in every possible orientation.
- Temperature: The performance of the watch is analysed under significant temperature fluctuations, ranging from 18°C (simulating a period of rest) to 35°C (representative of periods of activity), ensuring its reliability in a variety of environments.
The HPG Test: Simulating Real-World Conditions for Better Reliability
A sophisticated custom-built machine performs a series of alternating cycles: periods of “stable rest” simulate moments of calm, whilst “stress cycles” recreate the dynamic challenges of everyday wear and tear. This three-day immersive test replicates a full week of wear, helping to ensure that your Master Control Chronometre maintains optimal chronometric accuracy, even when faced with the challenges of everyday life. This commitment is reflected in the HPG emblem engraved on the case backs.
Dual Certification of Excellence: HPG and COSC
Jaeger-LeCoultre’s commitment to excellence does not end there. Each Master Control Chronometre, in addition to bearing the HPG hallmark, also holds the renowned COSC certification for chronometric precision. This dual certification highlights our dedication to high precision, a key factor when it comes to bearing the title of “Chronometer”.
The Art of Fine Finishing: The HPG Hallmark of Decorative Excellence
The HPG label also aims to be a benchmark for decorative excellence. It indicates that every component of the calibre has been meticulously finished using eight traditional techniques: circular graining, Côtes de Genève, circular smoothing, burnishing, polishing of screw heads, linear smoothing, sinked rubies and bevelling. Drawing inspiration from the legacy of Antoine LeCoultre, we seek to transform functional craftsmanship into a high-quality artistic expression, where even circular graining, once purely utilitarian, can become a sophisticated aesthetic signature.
With the HPG hallmark, Jaeger-LeCoultre is presenting its vision of fine watchmaking: a fusion of meticulous attention to detail and mastery of exquisite decoration. Discover one aspect of our commitment to enduring reliability and watchmaking excellence.
What does HPG stand for on Jaeger-LeCoultre watches?
The HPG (High Precision Guarantee) hallmark is a new certification from Jaeger-LeCoultre, notably applied to the Master Control Chronometre watches.
- Its purpose: To demonstrate high precision, enhanced reliability and a high-quality, attractive finish.
- The Tests: A rigorous, patent-pending protocol mimics the day-to-day wear and tear of the watch.
- Assessment Criteria: This protocol measures performance under various conditions: altitude, shocks, positions and fluctuations in temperature.
- Test Duration: The process lasts three days, simulating the equivalent of a full week’s use.
- Dual Certification: In addition to the HPG, the watches are COSC-certified, highlighting their high level of chronometric precision.
- Finish: The HPG label also reflects decorative excellence, with eight traditional techniques applied to the calibre.
- Philosophy: It embodies the union of meticulous technical precision and refined watchmaking craftsmanship.