Jaeger-LeCoultre Ultra-Thin ref. 4441.20 18K Gold

The watch is powered by the mechanical, manual-winding Jaeger-LeCoultre Calibre 838 movement, often referred to as the P838. Introduced in 1962, this calibre is considered one of the most highly regarded ultra-thin movements of its era. It operates at a frequency of 18,000 vibrations per hour, features 18 jewels, and offers a power reserve of approximately 36 hours.

The design utilizes a lever escapement, a monometallic balance wheel, and a flat balance spring. The manual winding mechanism means that the watch requires regular winding via the crown.

• Movement: Jaeger-LeCoultre Calibre 838 / P838
• Movement type: mechanical, manual-winding
• Frequency: 18,000 vibrations per hour
• Jewel count: 18
• Power reserve: approximately 36 hours
• Escapement: lever
• Case: 18k gold, round
• Case diameter: approximately 33.5 mm without crown, approximately 34.5 mm with crown
• Case thickness: approximately 5.5 mm
• Lug to lug: approximately 38 mm
• Dial: white
• Crystal: Hesalite / acrylic
• Case back: snap-on
• Crown: original
• Strap: as shown in the product photos

The case is made of 18-karat gold and has a classic, round shape. The diameter is approximately 33.5 mm without the crown, about 34.5 mm with the crown, the thickness is about 5.5 mm, and the lug-to-lug measurement is approximately 38 mm. The watch features a snap-on case back, an original crown, and a hesalite crystal, typical for vintage watches.

The white dial is kept in a minimalist, elegant style characteristic of classic dress watches. Its understated form highlights the slender proportions of the case.

The watch is equipped with a strap tailored to the elegant nature of the model, which complements the gold case well. The exact type, color, and condition of the strap are shown in the product photos. Before finalizing the purchase, it is possible to discuss replacing the strap with a variant that suits the customer's preferences.

Ref. 4441.20 from the Ultra-Thin line is an elegant vintage Swiss watch dating back to around 1970. The gold case, measuring only about 5.5 mm in thickness, makes this model an exceptionally slender dress watch.

The white dial is maintained in a minimalist, elegant style characteristic of classic dress watches. Its calm form emphasizes the proportions of the case and the timeless nature of the model.

This is a watch for those who value traditional watchmaking, noble materials, and discreet vintage styling.

The watch is a pre-owned, vintage, collector's item. It may show natural signs of age, storage, wear, or previous servicing. The detailed visual condition is shown in the product photos, which are an integral part of the description.

The watch features its original crown. The type, color, and condition of the strap are shown in the product photos.

The scope of the set, documentation, and any accessories is confirmed individually before the finalization of the purchase.