Jaeger-LeCoultre Master Ultra Thin Power Reserve Q137258J: Pink Gold Guide

The Jaeger-LeCoultre Master Ultra Thin Power Reserve Q137258J is a 39 mm pink gold dress watch with a blue dial, a power reserve indicator and a manually wound movement, worn on a leather strap. It belongs to the Master Ultra Thin line, Jaeger-LeCoultre's slim, traditional dress watches, and its single complication is the indicator that tells you how much wind is left. This guide covers the specifications we can confirm, what a manual-wind power reserve display does, how the Q137258J compares with other Master Ultra Thin models, how it wears, price context in 2026 and what to check before buying. Bizak & Co. sources this reference to order; the Master Ultra Thin collection lists the configurations we can seek.

Last reviewed on October 1, 2026 by Filip Biczak. Prices are dated observations, not quotes.

Jaeger-LeCoultre Master Ultra Thin Power Reserve Q137258J specifications

Source: the Federation of the Swiss Watch Industry gives background on Swiss fine watchmaking, and Phillips Watches shows how dress watches by Jaeger-LeCoultre are catalogued at auction. Neither is a source for this reference's specifications; use the papers for those.

What does the Master Ultra Thin line stand for?

Jaeger-LeCoultre was founded in 1833 by Antoine LeCoultre in the Vallée de Joux and makes its movements in house. Slim movements are part of its history: the company has described its Calibre 145 of 1907 as the thinnest movement of its day. The Master Ultra Thin collection brings that tradition to modern dress watches, where the point is a slim case and a restrained dial rather than a display of complications. For a buyer, that means the watch should be judged on proportions and finishing: the case profile, the dial surface, the applied indexes and how neatly the power reserve display is integrated into the dial.

What does a power reserve display do on a manual-wind watch?

A manual-wind movement is powered by a mainspring that you wind with the crown. The power reserve indicator shows how much wind remains, so you know when to wind rather than guessing from a stopped watch. On a daily-wear dress watch it removes the main drawback of manual winding: you can wind to a known level, and you stop when the indicator reaches full. Practical habits are simple. Wind the watch at the same time each day, wind until you feel firm resistance and stop, and do not force the crown past that point. A watch that stops overnight on a full wind needs servicing.

Q137258J vs other Master Ultra Thin models

The Q137258J is the simplest of the three, and that is its appeal: a thin pink gold case with a single useful indicator. If you want a larger calendar or moon-phase dial, ask us about the other references; confirm the winding type and dimensions for each. Our Patek Philippe dress watch guide places Jaeger-LeCoultre among the other classic dress-watch makers.

How does a 39 mm pink gold dress watch wear?

At 39 mm the case sits in the classic dress range: large enough to read easily, small enough to slide under a shirt cuff. A thin case reduces the height on the wrist, which matters more than the diameter for a watch worn with formal clothes. Pink gold looks warm against skin and pairs well with a blue dial and a dark strap. Wrists from about 15.5 cm (6.1 inches) upward carry it well; on a very narrow wrist, check lug to lug. Leather straps wear faster than metal bracelets, so inspect the strap and buckle and factor in a replacement if the strap is not new.

Is the blue dial the right choice?

Blue is the most flexible colour on a pink gold dress watch: it contrasts with the warm case, stays formal and is less severe than black. Check the dial finish in person, because blue dials can look flat in photographs and very different under different light. If you prefer a classic look, silver or champagne dials with the same case are quieter alternatives; if you prefer something bolder, a blue dial is the right move.

How much is a Jaeger-LeCoultre Master Ultra Thin Power Reserve in 2026?

• Retail. Jaeger-LeCoultre sets list prices by market and metal, and we did not verify a current figure for this reference. Ask for a dated quote and compare it with the manufacturer's boutique price.
• Secondary market. We have no reliable price history for this exact reference, so treat any asking price, including ours, as one dated data point rather than a market median.
• Bizak catalogue ask. On October 1, 2026 our sourced catalogue listed the Q137258J at US$24,831, sourced to order.

Those figures describe what we saw and will move. Our Cartier dress watch guide explains how we compare quotes across brands.

Buying a Master Ultra Thin: what to check

• Condition and papers. The catalogue flags condition as unconfirmed, so ask for written confirmation of whether the watch is unworn, plus the box, warranty card and any protective stickers.
• Warranty. Jaeger-LeCoultre has advertised an extended warranty for registered watches; confirm the terms on the card and whether they transfer.
• Winding. The crown should wind smoothly with no grinding or slipping, and the power reserve indicator should rise as you wind and fall as the watch runs.
• Case. Look at the case flanks and lugs of the pink gold under strong light for contact marks.
• Dial. The blue dial should be even, with sharp applied indexes and no marks near the indicator window.
• Strap. Check the leather, the stitching and the buckle metal.
• Reference and serial. The reference on the case, papers and invoice should agree.

Our authentication process describes what we inspect before dispatch.

Is the Q137258J a good watch to own?

It is a watch for someone who wants a quiet dress watch with a real manufacture movement and is willing to wind it. Resale values of precious-metal dress watches are less predictable than steel sports watches, so buy it for wear rather than appreciation. A thin gold watch is also comfortable and uncommon, which is a good reason to own one.

Quick answers

What is the Jaeger-LeCoultre Master Ultra Thin Power Reserve Q137258J?

It is a 39 mm pink gold dress watch with a blue dial, a manually wound movement and a power reserve indicator, on a leather strap.

How much is it?

Bizak's sourced catalogue listed it at US$24,831 on October 1, 2026. We did not verify a current retail price, so ask for a dated quote.

Is it manual or automatic?

Manual. You wind it with the crown, and the power reserve indicator shows how much wind is left.

Is it new or pre-owned?

It is listed as brand new, but our catalogue flags the condition as unconfirmed. Ask for written confirmation and the papers before you buy.

How thin is it?

Our catalogue record does not give the thickness, so we do not state a number. Ask for the measured thickness from the manufacturer or the seller.

Request a Master Ultra Thin Power Reserve sourcing quote

Tell us the metal, dial, condition, whether the warranty card is required, your budget and timing through our sourcing enquiry form. We confirm the specific watch, photographs, papers and final price before you commit. Catalogue entry: Master Ultra Thin Power Reserve Q137258J; browse the Master Ultra Thin collection, the Jaeger-LeCoultre collection, or sell or trade your watch.

Related reading: Patek Philippe dress watch guide · Cartier dress watch heritage guide · Audemars Piguet Royal Oak dress watch guide · Rolex dress watch heritage guide.