Chopard L.U.C Grand Strike: A Milestone In Chiming Watchmaking

To celebrate the 30th anniversary of Chopard Manufacture, the brand has introduced one of its most technically ambitious creations: the L.U.C Grand Strike. This exceptional timepiece brings together the manufacture’s experience in chiming mechanisms, chronometric precision, and decorative finishing. It unites a grande sonnerie, petite sonnerie, and minute repeater inside an elegant white-gold case, setting a new benchmark for the L.U.C collection and marking a major step forward in modern striking watchmaking.

A Legacy Shaped by Two Key Development Paths

The story of the L.U.C Grand Strike is rooted in two major chapters of Chopard’s historical development.

The first concerns the brand’s exploration of chiming mechanisms, a journey that began when the manufacture was founded. Early milestones such as the L.U.C Strike One from 2006 and the L.U.C Full Strike from 2016 demonstrated Chopard’s willingness to rethink traditional repeater construction. The Strike One opened the door to a long-term goal of creating a fully in-house grande sonnerie movement, while the Full Strike introduced the groundbreaking use of sapphire crystal gongs, a world-first at the time. These innovations laid the foundations for the acoustic system found in the Grand Strike.

The second development path relates to Chopard’s commitment to precision. Over the past decades, the manufacture has pursued strict chronometric and quality standards, often verified by prestigious institutions such as COSC and the Poinçon de Genève. One notable example is the L.U.C 8HF from 2012, which featured an 8 Hz escapement—the first of its kind to be COSC-certified. Chopard’s experience with high-performance calibres and efficient power distribution, including multi-barrel systems like the L.U.C Quattro, played a crucial role in the engineering of the Grand Strike’s movement.

These two storylines—striking watchmaking and chronometric excellence—come together in the L.U.C Grand Strike, creating a watch that embodies thirty years of technical evolution.

Case and Design

The L.U.C Grand Strike is housed in a 43 mm case crafted from ethical 18k white gold, offering a balance between presence and refinement. The vertically satin-brushed case band contrasts nicely with the polished bezel, lugs, and caseback, giving the watch a sophisticated character without excessive ornamentation.

At 14.08 mm thick, the Grand Strike remains relatively slim for a chiming watch equipped with a tourbillon and a full sonnerie system. The crown integrates a pusher that activates the minute repeater function, and just above it sits a sliding selector that allows the wearer to switch between Grande Sonnerie, Petite Sonnerie, and Silence modes.

The hand-engraved sapphire caseback provides an unobstructed view of the movement and its chiming components, emphasizing the complexity and finishing that define the watch.

The L.U.C 08.03-L Caliber

Inside the case beats the L.U.C 08.03-L, a hand-finished movement consisting of 686 components. It features a dual-barrel construction for the timekeeping system, complemented by an additional power system dedicated to the sonnerie. The mainplate and bridges are crafted from German silver and decorated with Côtes de Genève, while the tourbillon bridge is polished to a mirror finish, showcasing the level of detail applied to the movement.

The calibre operates at 28,800 vibrations per hour and offers 70 hours of power reserve for the timekeeping side. Even more impressive is that the chiming mechanism maintains a minimum of 12 hours of autonomy in Grande Sonnerie mode, despite the significant energy demand of striking both the hours and quarters.

The movement also carries the Poinçon de Genève, ensuring it meets the strict criteria for finishing and performance that define this prestigious hallmark.

Tourbillon with Integrated Small Seconds

The 60-second tourbillon, positioned at the six o’clock mark, adds visual symmetry and a demonstration of Chopard’s chronometric expertise. On top of the cage sits a small seconds indicator that serves as an immediate visual confirmation that the movement is running. The mechanism also features a stop-seconds function, allowing precise time-setting when the crown is pulled out.

Sapphire Crystal Gongs: Acoustic Innovation Refined

One of the Grand Strike’s most distinctive achievements is its fully integrated sapphire crystal chiming system. Unlike traditional repeaters that rely on steel gongs attached to the movement plate, Chopard machines the gongs and the dial crystal from a single block of sapphire. This construction dramatically improves acoustic purity, ensuring a clear and resonant chime that remains unchanged over time, as sapphire is impervious to deformation.

The gongs are shaped with a square cross-section, unlike the traditional round profile used in metal gongs. This geometry increases the surface area of contact between the hammers and the gongs, improving the efficiency of energy transfer while generating a richer and more layered sound. The acoustic signature of the Grand Strike is tuned to a C♯–F♮ interval, a combination chosen for its stability and pleasant harmonic structure.

A Comprehensive Expression of Chopard’s Watchmaking Philosophy

The L.U.C Grand Strike unites all aspects of Chopard’s expertise: high horology complications, acoustic innovation, decorative mastery, and COSC-certified precision. The watch demonstrates how far the manufacture has come in three decades and how its long-term investments in independent research and development have culminated in a single, cohesive creation.

Conclusion

The Chopard L.U.C Grand Strike is not only a celebration of Chopard Manufacture’s 30th anniversary but also a statement of what modern chiming watches can achieve. Its sophisticated movement, innovative sapphire acoustic system, and refined aesthetics reflect a deep understanding of both tradition and forward-thinking engineering.

Produced in very limited numbers and priced around CHF 800,000, the Grand Strike will only reach the hands of a fortunate few, but its significance extends far beyond exclusivity. It stands as a landmark in contemporary haute horlogerie—an example of how craftsmanship, innovation, and precision can come together in a single extraordinary timepiece.

More details at www.chopard.com.

General Specifications:

Brand: Chopard

Model: L.U.C Grand Strike

Reference: 161994-1001

Dial: Openworked

Case Material: 18k Ethical white gold

Case Dimensions: 43 mm Diameter, 14.08 mm thickness

Crystal: Sapphire Glass

Case Back: Sapphire Glass

Water Resistance: No

Strap: Hand-sewn grey alligator leather strap with a 18k ethical white golg buckle

Calibre: L.U.C 08.03-L

Functions: Hours, minutes, 60-seconds tourbillon, grande sonnerie, petite sonnerie, minute repeater

Winding: Hand-wound

Frequency: 4 Hz (28,800 Vph)

Jewels: 67

Components: 686

Power Reserve: 70 Hours

Price: CHF 800,000

Limited Edition: No, but annual production is limited to a small number of pieces.

Availability: Now