Jaeger-LeCoultre Master Ultra Thin Moon 39 Swiss Watches

Like a German limousine, the new Jaeger-LeCoultre Master Ultra Thin Moon 39 (refs. Q1368520, Q1362520 (pictured,) and ref. Q1362501) is as conservative as it is contemporary. While the timekeeper doesn’t intend to stun you with high-tech materials that are usually employed by makers of Formula 1 sport cars and F-35 jet fighters, it still delivers a level of refinement that blows brands like Hublot out of the water leaving in them in the dust (figuratively speaking, of course.)

JLC belongs to the rare breed of watchmakers that turn everything they touch into… a beautiful timepiece. The new Jaeger-LeCoultre Master Ultra Thin Moon 39 automatic series of watches is the latest example of JLC’s mastery.

Overall Impression

The device that was introduced back in January at SIHH 2011 event features a very nice combination of classic elements that somehow make the timepiece look very modern. Its case seems to have ideal proportions that allow the medium-sized accessory feel even more comfortable even on a relatively narrow wrist. But that is somewhat predictable when a brand takes the industry’s golden standard of a dress watch.

Jaeger-LeCoultre Master Ultra Thin Moon 39 automatic watch in rose gold

The bezel is thin enough not to draw too much unnecessary attention to itself, yet is prominent enough to serve as a perfect frame for the simple, laconic dial.

Even the alligator leather strap seems to be toned to better match the combination of rose gold case and off-white dial (by the way of speaking, making it a bit difficult to find a third-party replacement since you will always long to that beautifully well-matched color of the original strap.)


As you may have already guessed, the new ultra-thin timepiece from of the most revered Swiss watchmakers comes in a slim round case 39 millimeters in diameter that is available both in dressy rose gold and more reserved steel.

Although during the recent years Swiss watchmaking brands partially succumbed to the fad of “oversized” watches churning out hundreds of models that look almost as big as a hockey puck, it is pleasant to see that there are still models that are issued in a more classic size.


The rose gold alloy of the body is neatly supported by a beige-toned dial that is decorated with JLC’s signature triangular hour markers and features a moonphase indicator.

Placed at 6 o’clock, the simple, but picturesque complication is accompanied with a simple circular calendar indicator that shows current date with a thin baton-shaped hand.

While Arabic numerals on the date display are a bit too small for my taste, I think that it won’t be a problem for long-term owners since, with time, you will be able to correctly register current date even without looking at actual numerals.


Driven by the new JLC Caliber 925 automatic movement (as usual, crafted, assembled and decorated by hand at Jaeger-LeCoultre’s own production facility,) the watch features standard power reserve of 43 hours.

It also offers a high level of quality, too, since every movement, like a hand-built internal combustion engine of a supercar, is tested for as long as 42 days (1000 hours, to be more precise,) then readjusted to offer the best possible performance.

According to the Swiss company, the watch will be presented in three cases: stainless steel (Ref. Q1368520,) rose gold (Ref. Q1362520,) and rose gold set with diamonds (Ref. Q1362501.)

No info on availability and price, but expect the Jaeger-LeCoultre Master Ultra Thin Moon 39 to be quite expensive.

See also: Jaeger-LeCoultre Grande Reverso Ultra Thin in Rose Gold (Ref. Q2782520)

Photos: Jaeger-LeCoultre

Jaeger-LeCoultre Master Ultra Thin Moon 39 (refs. Q1368520, Q1362520 & Q1362501) automatic watch specification

Price: $19,000 (MSRP)
Movement: Automatic, JLC Caliber 925, 4.90 mm thick, 246 components, hand-built, in-house, Swiss Made
Number of jewels: 30
Movement frequency: 28,800 vph
Functions: Hours, minutes, seconds, date, moonphase
Power reserve: 43 hours
Case material: Stainless steel or Rose gold
Bezel material: Stainless steel or Rose gold
Case shape: Round
Bezel shape: Round
Case size: 39.00 mm
Lug width: No data
Case height: 9.90 mm
Dial: Beige
Numerals: None
Hands: Rose gold
Water resistance: 50 meters
Strap: Black alligator leather
Crystal: Sapphire, antireflective
Case back: Sapphire

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