Montre Jaeger-LeCoultre Master Control Calendar automatique acier bracelet cuir 40 mm

Retrospective Although Jaeger-LeCoultre's image is strongly associated with the Reverso, it has many other designs to its credit. In the 1940s and 1950s, Jaeger-LeCoultre was known for its triple calendar watches with a moon phase. The Master Control line has been in the Manufacture's catalog since 1992, and takes its name from the 1000 Hours Control certificate created at that time. What you need to know This new Master Control Calendar evolves with the balanced design of the previous model. The calendar numerals are located on the periphery and the day and month windows on the upper part. The moon phase counter located at 6 o'clock is surrounded by the small seconds timer at 6 o'clock. As for the movement, this reference 4148420 is equipped with the new version of the automatic caliber 866 which has been significantly improved. The power reserve has been increased to 70 hours (compared to 43 hours) thanks to the improvement of the mainspring and the barrel. The escapement wheel and pallets are now made of silicon. The date display is another important new feature. Each time the 15th of the month changes to the 16th, the red-tipped date hand jumps 90° to preserve the aesthetics of the moon phase display. An attention to detail that only an integrated Manufacture like Jaeger-Lecoutre can offer. Verdict The complete calendar moon phase complication is aesthetically very interesting because it offers a design close to that of an annual or perpetual calendar for a much more reasonable cost and also requires less adjustments and maintenance than the latter. If we are not witnessing an aesthetic revolution, the technical improvements of this timepiece are very appreciable. Focus This Master Control Calendar is equipped with a vegetable-tanned Novanappa calf leather strap produced in France. It is equipped with a quick-change system, making it easy to change it without using tools.