5C Factory proudly presents a refined aesthetic masterpiece from the Jaeger-LeCoultre Master Series — model 1558420, featuring a high-end version with a true small seconds display at 6 o’clock.
Key Details
Case Design
Case size: 39mm × 12mm. The watch adopts a domed “box-style” crystal profile, carefully refined through multiple adjustments to achieve a curvature close to the original design. The result preserves the authentic horological character while maintaining its distinctive visual identity.
Dial Layout & Functions
12 o’clock: dual apertures displaying weekday and month
6 o’clock: sub-dial with small seconds and moonphase indication
Perimeter: date hand display
All functional elements are designed to replicate the original layout, balancing visual symmetry with mechanical complexity.
Clasp Engineering
The folding clasp features a seamless construction with no visible gaps when viewed from the side. Its curvature closely matches the original design, providing a more natural and comfortable wrist fit.
Movement
Powered by a 5C Factory customized modified Jaeger-LeCoultre-style 866/1 automatic movement, engineered for stable operation and refined timekeeping performance.
A design philosophy of “simplicity on the surface, complexity within,” embodying meticulous craftsmanship and aesthetic precision.




