Jaeger-LeCoultre Master Series presents the refined aesthetic creation R55 — model 1558420, a high-end version featuring a true small seconds display at 6 o’clock.
Key Details
Case Design
Case size: 39mm × 12mm. The watch adopts a slightly domed “box-style” crystal profile, carefully refined through multiple iterations to achieve a curvature closely matching the original design. This preserves the authentic horological character while maintaining a distinctive visual identity.
Dial Layout & Functions
12 o’clock: dual apertures displaying weekday and month
6 o’clock: sub-dial for small seconds with moonphase indication
Perimeter: date hand display
All functions are faithfully reconstructed to replicate the original layout, emphasizing symmetry, depth, and mechanical layering.
Clasp Engineering
The folding clasp features a seamless structure with no visible gaps from the side profile. Its curvature matches the original design, offering improved wrist comfort and a more integrated appearance.
Movement
Powered by a 5C Factory customized modified Jaeger-LeCoultre-style 866/1 automatic movement, engineered for stable performance and reliable timekeeping.
A refined interpretation of mechanical elegance — minimalist in appearance, yet intricate in construction.




