The GR factory's new product is a replica of the Jaeger-LeCoultre Master Ultra Thin Perpetual Calendar mechanical watch, developed after three years of research on the fully functional mechanical movement. Adhering to the philosophy of not considering time and cost, it successfully uses the imported 9015 movement to replicate all the functions of the complex 868 movement, matching the official specifications!.1. Perpetual Calendar Function: The invisible button at the 8 o'clock position allows for year adjustment via the month. The perpetual calendar year operates normally, facilitating the operation of the calendar module. The year display ranges from 2024 to 2029, making it easier to replace the perpetual calendar function module.2. Calendar, Week, and Month Discs:. - 1. The calendar disc at the 3 o'clock position displays the date. You can adjust the date forward by turning the first gear pulled from the lever, and backward by reversing it. *It is not recommended to adjust backward as it may cause the moon phase disc to jump. - 2. The week disc at the 9 o'clock position can be adjusted in reverse through the second gear pulled from the lever, using a 24-hour time format. - 3. The month disc at the 6 o'clock position can be adjusted by pressing the invisible button at the 8 o'clock position, with a dedicated adjustment lever included. This allows all three functions to be adjusted independently for ease of use while wearing.3. Warning Window Function: Located above the central axis on the dial, this fan-shaped window shows white when the year can be manually adjusted, and blue during restricted time periods. It is advisable not to adjust the year during this time to avoid damaging the movement's lifespan. The 868/1 movement is a complex function movement, not a defect, and this is also true for the original.4. Moon Phase Disc Function: Positioned at 12 o'clock, the moon phase window completes a full cycle every 30 days, achieving true moon phase functionality. It can be adjusted in reverse by pulling the first gear, effectively addressing the issue of not being able to adjust the moon phase function independently.Additionally, a card with instructions for adjusting these functions will be provided to help watch enthusiasts understand it more clearly.While focusing on functional replication, the restoration of appearance is also of utmost importance:.1. The materials used for the case and back are consistent with the original stainless steel. Each component is precision-made through CNC machining to restore the original appearance, maintaining the original 39mm size, while the thickness is controlled to be as close to the original as possible, achieving approximately 10mm.2. The restoration of the dial is based on the original dimensions, with the scales made from genuine molds, achieving an excellent three-dimensional feel and gloss. The dimensions and positions of the scales are subject to strict quality control. The three functional discs are designed to be recessed like the original, with the moon phase and perpetual calendar windows having a more pronounced three-dimensional effect. The scale points and logo closely follow the original, with a slightly raised appearance, and all dial colors are matched as closely as possible to the original.3. The use of Baton hands, which are Jaeger-LeCoultre's signature hands, features half sandblasted and half polished finishes. The hour and second hands are crafted using a micro-press bending technique, and the blue hands are treated for a genuine blue hue.All the efforts of the GR factory are a necessary path to achieving the desired results, striving to replicate this complex Jaeger-LeCoultre Master Perpetual Calendar watch, allowing watch enthusiasts to not only appreciate it but also truly experience the charm of the timepiece.
