The first movement resulting from the partnership between the Swiss manufacturer La Joux-Perret and the Besançon-based family business Humbert-Droz, the G100 is a new automatic three-hand caliber with date, boasting a generous 68-hour power reserve and a proven architecture.
This ultra-precise movement, equipped with 24 jewels and measuring 24.6 mm x 4.45 mm, develops a frequency of 4 Hz and 28,800 alternations.
Equipped with a Stop Seconds function, it is extremely precise, varying between -4 and +6 seconds per day, and offers a 68-hour power reserve, more commonly known as "Weekend proof," allowing the watch to run from Friday evening to Monday morning without being worn by its lucky owner.
March LA.B positions itself as a pioneer of "responsible watchmaking" with the desire to bring together skills and unite forces for a movement 100% machined in Switzerland and 100% assembled in France.
The BONZER Automatic dial features the typical 70s "crosshair" design. It is intentionally simplified and assembled with precisely notched indices.
The steel date window at 3 o'clock displays retro-style numerals in white on a black background, with green for every 3rd of the month. A printed minute track frames the whole.
The "M" logo is a finely cut appliqué.
The hands are tuning-fork shaped to frame an optimal reading experience.
Luminova is applied to the face of the hands.
The BONZER Automatic bezels are made of ceramic, which gives them high scratch resistance and optimal readability in all circumstances.
They rotate on "120 clicks" for precise time measurement.
The intertwined lines of March LA.B are precisely engraved on the circumference of the edge.
The ensemble is harmonious and finalizes the signature construction of the case.



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