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Jaeger-LeCoultre Master Ultra Thin Small Seconds — Q1218420

Jaeger-LeCoultre

Master Ultra Thin Small Seconds

Q1218420

Refined restraint in 39 mm — the art of the ultra-thin dress watch.

Estimated market value
$5,800
Confidence: Moderate

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Overview

The Jaeger-LeCoultre Master Ultra Thin Small Seconds (ref. Q1218420) distils the Manufacture's long tradition of ultra-thin watchmaking into a 39 mm stainless steel case. A silvered grey dial with a small-seconds subdial at 6 o'clock provides a quietly classical layout, while Calibre 896 powers the watch from within. The result is a dress watch that balances technical discipline with understated elegance.

History

The Master Ultra Thin line traces its roots to Jaeger-LeCoultre's enduring pursuit of movement miniaturisation, a discipline the Manufacture has championed since the mid-twentieth century. The Q1218420 entered the collection in 2018, bringing a stainless steel option to a line historically associated with precious metals. Its introduction reflected a broader collector appetite for versatile, steel-cased dress watches that wear equally well at the wrist and in a watch box. The reference has remained in production, cementing its place as a contemporary benchmark for the genre.

Notable points

  • Calibre 896 is an in-house ultra-thin automatic movement, exemplifying Jaeger-LeCoultre's mastery of slim-profile engineering.
  • At 39 mm, the case diameter sits at a classic dress-watch proportion, comfortable on a wide range of wrist sizes.
  • The silvered grey dial is finished to a high standard, with the small-seconds subdial at 6 o'clock as the sole complication — a mark of deliberate restraint.
  • Stainless steel construction makes this reference notably accessible within the Master Ultra Thin family, which also includes gold-cased variants.
  • The dial's minimal layout — no date, no indices beyond applied hour markers — reflects the purist philosophy of the ultra-thin dress-watch tradition.

Specifications

Brand
Jaeger-LeCoultre
Collection
Master Ultra Thin
Reference
Q1218420
Years of production
2018 – present
Case
39mm Stainless steel
Case material
Stainless steel
Case diameter
39 mm
Movement
Cal. 896
Crystal
Sapphire
Dial
Silvered grey, small seconds at 6
Bezel
Polished steel
Bracelet / strap
Leather strap
Water resistance
50 m
Power reserve
43 h
Complications
Small seconds
Type
Dress
Worn as
Men's
Also known as
マスターウルトラスリム, ウルトラスリム, 超薄大师

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