In a beautiful case (40 mm), illustrious in its rounded form and finesse (11.3 mm), the Master Ultra Thin Tourbillon in pink gold reveals some surprising details, elaborated with care to achieve extreme precision. These include the enlarged and refined hour-markers on its dial, the new sunray-brushed finish of its caliber plate and the new gold bridge of its tourbillon.

The Master Ultra Thin collection epitomises Jaeger-LeCoultre’s philosophy of uniting technical virtuosity with timeless aesthetics. It reimagines traditional complications with designs that feature rich, clean lines. The entire collection showcases our exceptional watchmaking savoir-faire.

From its calibre to its case, every Jaeger‑LeCoultre watch is designed, manufactured and assembled under one roof, at our Manufacture in the Vallee de Joux. Our obsession with quality is renowned as every Jaeger‑LeCoultre watch undergoes strict “1,000 Hour Control” testing. This unique program provides internal certification tests that far exceed official chronometry tests.

It includes movement testing before and after casing and extends throughout assembly, according to conditions that match daily wear. A quality seal is engraved on the back of every watch once it meets our strict standards.
 

Technical Details

Case : Pink Gold 750/1000 (18 carats)

Diameter: 40 mm

Water Resistance : 5 Bar

Dial : Eggshell beige

Hands : dolphins

Gems : 168, Diamond, ~3.43 cts

Strap : Leather, Brown

Interchangeable: Yes

Lug width : 21mm

Length 12h : 75mm

Length 6h : 115mm

Buckle : Double Folding Buckle

Buckle Material : Pink Gold 750/1000 (18 carats)

Buckle width: 18mm
 

Jaeger-LeCoultre Calibre 978

Functions : Hour – Minute, Seconds, Tourbillon

Movement : Automatic winding, Components: 271, Vibrations per hour: 28800, Jewels: 33, Barrel: 1, Thickness: 6.5mm, Power reserve: 45 hours