The new product from GR Factory has undergone three years of research on the Jaeger-LeCoultre Master Ultra Thin Perpetual Calendar mechanical movement, replicating the Jaeger-LeCoultre Master Perpetual Calendar automatic mechanical watch. Adhering to the philosophy of not counting time and costs, it has successfully achieved the restoration of all functions of the complex 868 movement using the imported 9015 movement, consistent with the official version!.1. Perpetual Calendar Function: An invisible button located at the 8 o'clock position allows for year adjustment through the month. The perpetual calendar year operates normally, facilitating the operation of the calendar module, with the year display ranging from 2024 to 2029 for easier replacement of the perpetual calendar function module.2. Date, Day, and Month Discs: . - 1. The date disc is displayed at the 3 o'clock position and can be adjusted forward by pulling the first notch of the crown, while backward adjustment is not recommended as it may cause the moon phase disc to jump. - 2. The day disc is displayed at the 9 o'clock position and can be adjusted in reverse through the 24-hour time adjustment by pulling the second notch of the crown. - 3. The month disc is displayed at the 6 o'clock position and can be adjusted using the invisible button at the 8 o'clock position, with a specially provided adjustment lever. This enables independent adjustment of all three functions, making it easier to operate while wearing the watch.3. Warning Window Function: Located above the central axis of the dial, this fan-shaped window displays white when the year can be manually adjusted, and blue when it indicates a restricted time period. It is advisable not to adjust the year in this zone to avoid damaging the normal lifespan of the movement. The 868/1 movement is a complex functional movement, not a defect, and this is also true for the original.4. Moon Phase Function: Located at the 12 o'clock position, the moon phase window completes a cycle every 30 days, achieving true functionality and authentic moon phase representation. It can be adjusted in reverse by pulling the first notch of the crown, effectively solving the problem of the moon phase function not being independently adjustable.In addition, a user adjustment instruction card will be included to facilitate a clearer understanding for watch enthusiasts.While emphasizing functional restoration, the aesthetic restoration is equally important.1. The case materials are made of the same high-quality steel as the original, with each component precisely crafted through CNC machining to restore the original appearance. The size remains at 39mm, and the thickness is kept as close to the original as possible, currently around 10mm, while implementing all complex functions.2. The dial restoration adheres to the original dimensions, with genuine scale markers produced from molds, achieving infinite depth and gloss. The dimensions and placement of markers have undergone full quality control, with the three function discs being concave as in the original. The moon phase and perpetual calendar windows exhibit a more pronounced three-dimensional effect, and the scale markers and logo closely match the original, maintaining a slightly raised appearance. All dial colors are restored to be as consistent as possible.3. The watch features a Dauphine hand, which is the signature hand style of the Jaeger-LeCoultre brand, with one half being sandblasted and the other half polished. The hour and second hands are slightly bent, and the blue-steel hands are achieved through heat treatment for a more vibrant color.The entire effort of GR Factory is a necessary pathway to achieving results, striving to replicate this Jaeger-LeCoultre Master Perpetual Calendar watch as closely as possible, allowing watch enthusiasts to not only admire it but also truly feel the charm of the timepiece.
