The Jaeger-LeCoultre Master Ultra Thin Q1288420 is a refined dress watch that captures the essence of minimalist Swiss watchmaking through elegant proportions and meticulous craftsmanship.
After eighteen months of development and refinement, this model has been carefully engineered with a strong focus on detail, faithfully recreating the design language and visual character of the original timepiece.
Specifications
Brand: Jaeger-LeCoultre
Collection: Master Ultra Thin
Reference: Q1288420
Case
Diameter: 40mm ;Thickness: 8.0mm ;Material: 316L stainless steel ;Crystal: Sapphire crystal ;Water Resistance: 30 meters
Strap
Premium genuine leather strap ;Folding clasp
Movement
Powered by a Japanese 9015 automatic movement modified to a Cal.896-style configuration, offering dependable performance and stable timekeeping.
Craftsmanship Highlights
Developed from original-specification case architecture with careful attention to proportions and finishing
Signature dauphine-style hands reproduced with the distinctive dual-finish design, featuring one side brushed and the other polished for enhanced depth and light reflection
Three-piece case construction consisting of bezel, middle case, and caseback closely follows the original design language
Sunburst metallic dial finish creates a rich texture and dynamic light play
High-transparency sapphire crystal enhances clarity and showcases the dial details beautifully
Slim, elegant, and timeless, the Master Ultra Thin Q1288420 is designed for those who appreciate understated luxury, clean aesthetics, and classic watchmaking traditions. It is equally suited for business attire, formal occasions, and everyday sophisticated wear.




