Five Great Luxury Watches Under 40mm

For years, larger cases dominated contemporary watch design. Now, more manufactures are returning to classical proportions and proving that wrist presence has little to do with diameter. For smaller wrists in particular, watches under 40mm often provide a more balanced and comfortable fit. Dimensions alone, however, do not make a great collection. It should cover different occasions, unite enduring designs, and offer enough variety to remain interesting. These five watches show how versatile and desirable a luxury collection under $25,000 can be.

Dive Watch: Tudor Black Bay 54

The recently introduced Tudor Black Bay 54 “Blue” is equally at home on vacation and in everyday life. Tudor presents its compact dive watch in a particularly distinctive colorway, pairing a 37mm stainless-steel case inspired by historic references with modern engineering and contemporary comfort.

The focal point of the watch is the domed, subtly brushed dial in vivid sapphire blue. A color-matched aluminum bezel omits the usual minute scale, reinforcing the timepiece's restrained vintage character. Tudor’s signature Snowflake hour hand is joined by a classic lollipop seconds hand. Both, along with the minute hand and applied hour markers, are coated with Super-LumiNova for strong legibility in darkness.

Inside is the automatic manufacture caliber MT5400. The COSC-certified movement features bidirectional winding and delivers approximately 70 hours of power reserve. Water resistance to 200 meters, a screw-down crown, and a unidirectional rotating bezel make the Black Bay 54 a fully capable dive watch. Available options include a three-link stainless-steel bracelet with Tudor’s convenient T-fit clasp and a black rubber strap. The bracelet version is priced at approximately $4,900, while the rubber-strap model costs around $4,600. The Black Bay 54 “Blue” combines historical authenticity, practical engineering, and a bold yet highly wearable color.

Dresswatch: Jaeger-LeCoultre Reverso Classic Monoface

Few wristwatches are as instantly recognizable as the Jaeger-LeCoultre Reverso. Originally developed for polo players in 1931, its patented reversible case was designed to protect the crystal from impacts. With the Reverso Classic Monoface, Jaeger-LeCoultre carries that heritage forward in its purest form, combining ingenious functionality with understated elegance.

The 35.78 x 21mm stainless-steel case retains the characteristic Art Deco proportions of the historic Reverso. Its silver-toned dial features a guilloché center, a vertically brushed outer section, an applied logo, and blued hands, creating an impression of classical restraint. The blank reverse side also provides ample space for a personalized engraving.

Power comes from the hand-wound manufacture caliber 846. Beating at 21,600 vibrations per hour, it offers a 50-hour power reserve and displays only the hours and minutes. This elegant addition to the collection is priced at approximately $9,500.

Chronograph: Omega Speedmaster 38

For more than six decades, the Omega Speedmaster has ranked among the most significant chronographs in watchmaking history. While the Moonwatch owes its legendary reputation to space exploration, the Speedmaster 38 is for enthusiasts who prefer more compact proportions. The distinct Omega combines the collection’s signature design language with everyday versatility and an approachable size.

The stainless-steel case measures 38mm and sits comfortably on the wrist. Familiar Speedmaster details include the fixed tachymeter bezel and the balanced dial layout, with horizontally arranged subdials and a date display at 6 o’clock. Sapphire crystal on the front and back protects the watch while showing the decorated movement.

The watch is powered by the automatic Co-Axial caliber 3330, equipped with a column-wheel chronograph and silicon balance spring. The chronometer-certified movement runs at a frequency of 28,800 vibrations per hour and provides a 52-hour power reserve. Its Co-Axial escapement is designed to deliver long-term stability, reduced friction, and excellent rate performance. It is priced at approximately $7,000.

GMT: Longines Spirit Zulu Time

With the Spirit Zulu Time, Longines draws on a long tradition of watches designed for travelers. In 1925, the brand introduced its first wristwatch with a second time zone, featuring the Zulu flag on its dial, a reference to the universal time standard used in aviation. The modern Spirit Zulu Time revisits that heritage while combining pilot-watch DNA with practical GMT functionality.

Its 39mm stainless-steel case offers well-balanced proportions and is fitted with a bidirectional bezel featuring a ceramic insert. The anthracite dial provides excellent legibility and carefully executed details, while the additional GMT hand allows a second time zone to be read simultaneously.

Inside is the exclusive automatic Longines caliber L844. Its silicon balance spring provides increased resistance to magnetic fields and contributes to long-term rate stability. The movement is also COSC-certified as a chronometer, meeting stringent standards for precision and reliability. Priced at approximately $4,000, the Spirit Zulu Time is a compelling choice for frequent travelers.

Statement Piece: Baltic × SpaceOne Seconde Majeure

The Seconde Majeure is the result of an unusual collaboration between two French brands with distinctly different philosophies. Baltic is known for classically inspired watches with vintage character, while SpaceOne pursues futuristic designs and unconventional time displays. Working with independent watchmaker Théo Auffret, the two have created a watch that brings traditional mechanics and modern industrial design together in striking fashion.

The 38.5mm case is crafted from 904L stainless steel, combining classical proportions with an entirely reimagined dial architecture. Hours and minutes are displayed not by conventional hands, but by rotating sapphire discs. The hours appear at 12 o’clock and the minutes at 6, while a central seconds hand brings the composition to life.

Depending on the version, the dial is offered with either a finely brushed finish or an elaborate hand-applied “Charbonné” surface. This historical decorative technique requires up to three hours of manual work. Inside is the automatic Soprod P024 caliber with a 42-hour power reserve, supplemented by a jumping-hour module developed exclusively by Théo Auffret. Its complex mechanism of star wheel, column wheel, and spring is partially visible from the dial side, allowing the wearer to observe the hour disc jump precisely at the top of each hour.

Assembly takes place in Paris. With its innovative time display, thoughtful execution, and price below $3,500, the Seconde Majeure ranks among the most intriguing independent releases of recent years.

This article was first published by WatchTime Germany.