Jaeger-LeCoultre Master Ultra Thin Moon 36mm Is Timeless Elegance In Pink Gold
In the world of fine watchmaking, true sophistication is rarely loud. It is found in the harmony of proportions, the precision of mechanical artistry and the enduring appeal of a design that transcends trends. The new Jaeger-LeCoultre Master Ultra Thin Moon in 18K pink gold embodies this philosophy, bringing vintage-inspired dimensions and contemporary refinement to one of the Maison’s most enduring dress-watch designs.

A Study in Refined Proportions
Measuring just 36mm in diameter and 9.3mm in thickness, the new Master Ultra Thin Moon pays tribute to the elegant proportions of classic 1950s wristwatches. Its fully polished 18K pink gold case, curved lugs and slender profile create a graceful presence on the wrist, while the warm metallic tones lend the watch an understated sense of luxury.

The silver-coloured, sunray-brushed dial introduces a subtle contrast to the rich pink gold, complemented by gilt hour markers and faceted Dauphine hands. A carefully balanced arrangement ensures that every detail serves both aesthetic appeal and legibility. At six o’clock, the signature moon-phase display is paired with a date indication, adding a poetic complication without disturbing the dial’s symmetry.
Mechanical Excellence Beneath the Surface
Driving the watch is Jaeger-LeCoultre’s in-house, self-winding Calibre 925, a proven movement developed, manufactured and assembled at the Maison’s Manufacture in Le Sentier, Switzerland. Offering a substantial 70-hour power reserve, it combines dependable performance with the meticulous finishing expected of haute horlogerie.

Visible through the transparent sapphire case-back, the movement reveals traditional decorative details, including Côtes de Genève, bevelled bridges and blued screws. An open-worked 22K pink gold winding rotor adds another layer of visual refinement, underscoring the watch’s appeal to enthusiasts who appreciate mechanical craftsmanship as much as exterior design.
An Elegant Companion for Every Occasion
Completing the composition is a black alligator leather strap secured by an 18K pink gold pin buckle. The strap can be interchanged to suit different styles, allowing the watch to move effortlessly between formal occasions and more relaxed settings.
Water-resistant to 5 bar, the Master Ultra Thin Moon balances its dress-watch character with practical everyday versatility. Its restrained design, precious-metal construction and thoughtful complication make it particularly appealing to collectors seeking timeless elegance rather than fleeting novelty.
The Verdict
The Jaeger-LeCoultre Master Ultra Thin Moon 36mm, reference Q1242521, is a compelling expression of classical watchmaking in a contemporary form. With its refined pink gold case, beautifully balanced moon-phase display and reliable 70-hour in-house movement, it demonstrates that genuine luxury lies in the details.

For the modern aesthete, it is a watch that speaks quietly but confidently, a sophisticated interpretation of traditional watchmaking designed to remain relevant long after passing trends have faded.
Technical Specifications
- Brand: Jaeger-LeCoultre
- Collection: Master Ultra Thin Moon
- Reference: Q1242521
- Case: 18K pink gold
- Dimensions: 36mm diameter × 9.3mm thickness
- Movement: In-house automatic Calibre 925
- Functions: Hours, minutes, seconds, date and moon phase
- Power reserve: 70 hours
- Dial: Silver-coloured, sunray-brushed
- Strap: Black alligator leather with 18K pink gold pin buckle
- Water resistance: 5 bar
- Price: RRP £20,700.00
For more information please visit Jaeger-LeCoultre

