The Jaeger-LeCoultre Caliber 497 is a self-winding (automatic) mechanical movement developed by Jaeger-LeCoultre, positioned as an evolution of the Caliber 496. Like its predecessor, the 497 powers modern Master Control and Master Ultra Thin models, and it continues the brand’s tradition of slim, reliable, and elegantly finished movements designed for refined everyday wear. With modest upgrades in precision and finishing, the 497 is a contemporary movement that adheres to JLC’s 1,000-Hour Control certification.

Technical Specifications

• Manufacturer: Jaeger-LeCoultre

• Caliber: 497

• Type: Automatic (self-winding)

• Functions: Hours, minutes, central seconds, date

• Jewels: 32

• Frequency: 28,800 vibrations per hour (vph)

• Power Reserve: ~43 hours

• Diameter: ~26 mm

• Height: ~3.7 mm

• Rotor: Centrally mounted, unidirectional winding

• Certification: 1,000-Hour Control (whole watch tested for reliability and accuracy)

Key Features

The Caliber 497 maintains the refined architecture of the 496, with subtle improvements:

• Modern high-beat operation (28,800 vph) for enhanced timekeeping precision

• Unidirectional rotor on ball bearings, optimized for smooth and efficient winding

• Date complication at the 3 o’clock position

• Slim profile, allowing for elegant case designs

• Refined decoration, including Côtes de Genève, perlage, and blued screws in some variants

• More stable construction with updated components for improved durability

Although visually similar to the 496, the 497 benefits from minor material and machining improvements, ensuring tighter tolerances and improved serviceability.

Watches Powered by Caliber 497

The Caliber 497 has been used in various Master Control Date models, particularly in updated versions with:

• 39 mm or 40 mm case sizes

• Classic dial layouts with dauphine or baton hands

• Applied hour markers and a date window at 3 o’clock

• Exhibition casebacks, allowing visibility of the movement’s decoration

It may also be found in entry-level automatic JLC models designed with elegant minimalism.

Service and Reliability

The Caliber 497 is designed for:

• Consistent long-term performance under the rigors of daily wear

• Low-maintenance operation, thanks to improved lubricants and modern production methods

• A recommended service interval of around 6–8 years, depending on usage

Being part of the 1,000-Hour Control-tested family, the Caliber 497 undergoes rigorous testing that exceeds standard COSC chronometer standards.

Final Thoughts

The Jaeger-LeCoultre Caliber 497 is a sleek, capable, and understated automatic movement that aligns with the brand’s philosophy of quiet horological mastery. Ideal for those seeking a slim yet reliable mechanical watch, it powers many of JLC’s modern classics with elegance and precision. While not a showcase of haute complications, the 497 reflects the brand’s core values: refinement, accuracy, and integrity in watchmaking.