A Marriage of Aesthetics and Ergonomics: Richard Mille’s First Automatic Ladies’ Sports Watch RM 07-04
From Nadal’s ground-breaking RM 27-04 with tourbillon to the handsome RM 029 Le Mans Classic, the male percentile of Richard Mille fans shouldn’t find it too hard to pick out a pretty phenomenal sports watch. But what about the women, pipes up a voice at the back of the room? Up until now, this question would be met with silence. Yet times are changing in the watch world, as Richard Mille launches its very first women’s sports watch: the RM 07-04.
Sports are an integral part of Richard Mille’s brand identity – the athletes who represent the brand provide constant inspiration for its watch designs while simultaneously pushing innovation on all fronts. In return for their partnership, the watchmaker strives to create timepieces that match seamlessly to the varying requirements of the most successful sportsmen and sportswomen in the world.
Nafi Thiam, Ester Ledecka, Margot-Laffite
Aurora Straus, Nelly Korda, Yuliya Levchenko
After closely collaborating with six female athletes, the innovative horology house is now introducing six different versions of the RM 07-04, each of which correlates to their respective sports. The result is a well-proportioned, agile watch model that weighs a mere 36 grams – including the Velcro strap. That makes this automatic sports watch the lightest timepiece in the history of the Richard Mille ladies’ collection.
The case
Dimensions and materials
To keep these new ladies’ watches sophisticated, balanced, and of course wearable, Richard Mille opts for dimensions of 30.50 x 44.95 mm, combined with a case height of a fairly slim 10.35 mm. Five of the new models use Quartz TPT, while the remaining piece uses Carbon TPT. The latter material already made an appearance back in 2022, in the form of the RM 07-01 ladies’ watch, combined with ceramic and gold.
With both Quartz TPT and Carbon TPT developed specially for Richard Mille, the materials consist of multiple layers of parallel filaments obtained by dividing silica threads (for Quartz TPT) or carbon fibre threads. The key benefits of these materials are their resistance to high temperatures as well as their strength.
After the fibres are aligned in layers and saturated in resin, they are heated to 120 degrees Celsius and subjected to intense pressure, before being milled and finished at the manufacture. With six distinctive different colours available, the cases are also water-resistant to 50 m and screwed together with grade 5 titanium.
Master of innovation: Shock resistance
An frequent talking point when it comes to the new RM 07-04 is just how shock-proof it is: the watch can withstand accelerations of over 5,000 g’s. For context, most human beings can withstand roughly only 5 g’s – and only for a few seconds. Amongst other things we’ll come onto later, Richard Mille achieved this feat by equipping the automatic sports watch with gears that have involute (spirally curved) profiles. This eliminates any discrepancies between the wheel centres, especially those caused by temperature shifts.
The phenomenal dials on the RM 07-04 models fully expose the skeletonised automatic calibre CRMA8 – a rare sight on women’s watches, and even rarer on women’s sports watches. Three years in the making, the calibre CRMA8 is, in fact, the most compact movement ever developed by Richard Mille, with every millimetre as skeletonised as possible. According to the company’s Technical Director for Movements, Richard Mille was faced with a threefold technical challenge: extreme skeletonization, integration of the case with the movement, and inclusion of an inverted function selector.
The dial’s architecture is upheld by a titanium baseplate and bridges, which are coated with black PVD. Richard Mille opts for Grade 5 titanium on these sports watches in order to make use of the remarkably rigid alloy’s biocompatible and highly corrosion-resistant qualities, enabling the gear train to function effortlessly. Furthermore, Grade 5 titanium is roughly five times stronger than steel, thus often appearing in industries such as aerospace, aeronautics, and automotives. Unlike in those industries, however, the baseplate and bridges exposed on the dial are finished to perfection. The components are satin-finished, micro-blasted and bevelled by hand, before being tested to ensure they meet demanding strength requirements.
Situated beneath the titanium crown, Richard Mille’s designers integrate a colourful push-button for the function selector – a complication synonymous with the brand. This allows the wearer to select the winding, neutral and hand-setting functions on the RM 07-04 with just a push. In turn, a small hand at 5 o’clock displays the selected function. Furthermore, this special inverted selector eliminates all pressure on the winding system, while simultaneously providing an improved view of the movement’s kinematics in action.
The dial also exposes yet another horological spectacle: the free-sprung balance with variable inertia. This device guarantees greater reliability when subjected to shocks – again, vital in a high-quality sports watch – including during movement assembly or disassembly, creating better chronometric results over time. In addition, the regulator index is replaced with four adjustable small weights on the balance, allowing for a more accurate and repeatable calibration of the movement.
Via the caseback, the wearer can admire her RM 07-04’s lustrous platinum rotor, with the movement beating at a frequency of 4 Hz. Thanks to the use of a ‘OneWay’ winding system and ceramic ball bearings, the calibre’s barrel can efficiently gain energy despite the compact dimensions of the skeletonised women’s watch. The performance-enhancing, fast-rotating barrel avoids the problem of periodic internal mainspring adhesion, while offering the ideal power reserve and regularity ratio. Equally innovatively, the optimised delta curve of the coiled leaf-spring inside the barrel increases the precision of the calibre by ensuring a constant delivery of power over close to 50 hours of operation, using energy produced by the rotor.
Our partners are passionate people, willing to break the mould of their respective disciplines in order to succeed’
– Amanda Mille, Brand and Partnerships Director.
According to Brand and Partnerships Director Amanda Mille, these ladies’ sports watches were brought about in the hope of meeting the demands of the brand’s partners, who ‘wanted an even more technical piece to support them in their sporting activities.’ The faces of the six new RM 07-04 models are Nafi Thiam, Yuliya Levchenko, Ester Ledecká, Nelly Korda, Aurora Straus and Margot Laffite. But who are the personalities behind the watches and what inspired their respective designs?
American golfer Nelly Korda reached No.1 in the world ranking back in 2021, despite being only 22 years old at the time. Nelly opted for a feminine palette of pink shades for her watch – but it is the lightness of the sports watch that is most important for her. ‘The watch is light, and it feels very snug and just easy on the wrist. It’s literally art. It’s a very beautiful piece. I also love the detail that you can see inside the watch, the techniques, the mechanisms. I love that the colours pop, the blend with the burgundy, the pink and the white. I feel so comfortable in it that it’s just like a piece of me. It’s easy to wear while playing sports. In golf, the precision in detail is very important.’
Yuliya Levchenko
Ukrainian high jump champion Yuliya Levchenko, who earned the title of ‘Ukraine’s Best Female Athlete’ in 2017, reached the No. 2 world ranking in the same year and was a finalist at the Tokyo Olympic Games. Also opting for a feminine palette of various shades of purple and blue, lightness in a sports watch is also of the essence for Levchenko as a high jump champion: ‘It is so light that it makes me want to move.’
Margot Laffite
Margot Laffite arguably matches best to the brand in terms of sports, being a racing driver who has served as a partner of Richard Mille since 2017. Furthermore, her RM 07-04 model is certainly a stand-out piece, unusually combing a deep purple with an eye-catching shade of orange. This was a conscious decision: ‘In racing, you have designs that are really colourful. It’s a way to show yourself, the one you see on the track. That is what I like about the watch.’
The power of colour
Indeed, colour was generally an important talking point in the creation of these new watches, largely because colour is so very present in professional sportswear. According to research, bright and warm colours encourage the hormone dopamine, which is known to improve motivation. By contrast, pastel shades contribute to relaxation through promoting secretion of oxytocin. Interesting to note, then, the different palettes the respective athletes have opted for on these vibrant UV-resistant watches.
After becoming the only professional female sportscar racer in North America, Aurora Straus went on to compete in the likes of the Pirelli World Challenge – all the while combining this passion with her studies at Harvard University. Furthermore, this multi-talented multi-tasker also runs the charity Girls With Drive, which promotes careers for females within male-dominated industries.
As a driver, Richard Mille is a brand close to her heart that holds a good understanding of her passion, as is reflected in her peachy-orange, blue and grey coloured watch. ‘It’s super freeing to have that type of technology so light on your wrist and have it not hinder you in any way, particularly as an athlete. Richard Mille does an incredible job in how I’ve been ‘matched’ with watches that are such an accurate representation of my development. If I had to use two words to describe Richard Mille, it would be unbreakable and family. I love that this watch is unbreakable. And in that sense, an extension of the way that I think of myself in my car. I trust my watch the way I trust my body and the way I trust my car.’
Ester Ledecká
Meanwhile, Czech athlete Ester Ledecká was the first athlete to complete in two disciplines requiring different equipment – skis and snowboard – before going on to win gold medals in Super-G (alpine skiing) and in parallel giant slalom (snowboard), the latter of which she won again in 2022. For Ledecká, her green, black, and yellow RM 07-04 model not only provides a sense of comfort: the skeletonised timepiece also awakens an interest in horology. ‘I love that you can see what’s going on inside. It’s amazing to just watch all these little wheels running.’
Nafi Thiam
Finally, Nafi Thiam is a two-time gold Olympic medallist, having won the heptathlon event at the 2016 and 2020 Summer Olympics. Alongside her sporting achievements, Thiam also serves as an ambassador for UNICEF. Her RM 07-04 model is a harmonious yet playful combination of a powdery pink and green, paired with legible orange accents. ‘The most important thing, when I’m doing my sport, is that the watch is not annoying; that it’s discreet.’ Thiam’s attitude towards sports watches echoes sentiments held by many an athlete. Yet there’s an additional requirement: ‘There are definitely similarities between my body and the watch. I want them both to have great performance.’
A milestone in Richard Mille history
There’s no doubt that these six RM 07-04 watches mark an important moment in Richard Mille’s history, as their launch marks not only the introduction of the first ever automatic sports watches for the horology house’s female fans, but also the most light-weight yet shock-resistant ones to date. These sporty, playful watches will likely tick all the boxes not only for the athletes, but also entice other women looking for hard-to-find combinations of technicity, reliability, wearability, and style – all of which come together in this skeletonised tour de force by Richard Mille.
While it is an extreme privilege to have been inside pretty much every Swiss horology house, at some point, a picture automatically forms in one's mind as to what to expect when visiting yet another manufacture of mechanical watches. https://youtu.be/HQb-oEhKL9o What attracted me most to visiting the Piaget factory in Geneva was my totally fragmented…
In a year that’s already seen its fair share of landmark moments, Audemars Piguet has decided to raise the bar once again. Enter the calibre 7138 perpetual calendar. This calibre marks a genuine leap forward, and it’s one that’s set to completely transform how we think about perpetual calendars, making them more accessible, user-friendly, and, dare we…
The new stars at Swiss watch-brand Carl F. Bucherer are not again Hollywood actors or sport enthusiasts as brands usually commit as ambassadors to represent their products, but 188 manta rays! The reason is mainly the brands support in The Manta Trust, a UK registered charity committed to protecting and ensuring the survival of manta rays…
The world of haute horlogerie turns its attention to Geneva today, June 26, 2025, as Breguet is presenting another remarkable new model in celebration of its 250th anniversary: the Classique Tourbillon Sidéral 7255, a limited edition of just 50 pieces. This extraordinary creation honors Abraham-Louis Breguet’s invention of the tourbillon on June 26, 1801. For…
The perpetual calendar is surely one of the most complex challenges in wrist-watchmaking. The system is based on the Gregorian calendar, which was calculated by pope Gregor XIII in 1582 and is quite inconsistently bearing in mind the different days per month and not to forget the leap years. It’s a complex mathematical calculation and…
Swisswatches recently had the honour of meeting once again with the CEO of Breitling, Georges Kern, following the launch of the brand’s first own boutique located in Munich, Germany. Spanning over 220 square metres and two floors, the boutique in many ways embodies Breitling’s plans for the future – as Kern explains to our very…
A good reputation is easily lost, but takes far longer to build. So when Jaeger-LeCoultre is often – and fondly – referred to today as the ‘watchmaker of watchmakers’, it may sound like a well-worn phrase, yet there are countless reasons and decades of history behind it. The current Polaris collection, including recent additions such…
‘Belle Haute Horlogerie’ encapsulates what Vacheron Constantin has stood for ever since its founding in 1755: the pursuit of watchmaking in its highest form and the commitment to continually perpetuate the knowledge and know-how gathered by generations of master watchmakers. In its over 250-year history, Vacheron Constantin has unremittingly created not only fine timepieces, but…
There still is a strong desire for vintage-style on the watch market. Hence, there are hardly any brands that don’t offer heritage models in their collections. They meticulously follow design codes from the original models – colours, dials, straps are copied as detailed as possible and some recent models have even been reproduced almost identically.…
Here's why Montblanc manufactures diver’s watches – and is proving more successful at doing so than ever before. Behind every successful wristwatch, there tends to be a particular person advocating it. For over three years, the man behind Montblanc has been Laurent Lecamp. Paying a visit to him in Villeret proved to be a valuable…
Despite iconic watch models in their 51-year history, many collectors and connoisseurs of fine mechanics do not necessarily associate Porsche Design with the term 'watch manufacturer'. And yet Porsche Design's Swiss subsidiary, Porsche Design Timepieces AG, is currently developing something that could turn the Swiss watch world upside down and revolutionise it. An exclusive visit…
At Watches and Wonders 2025 in Geneva, there were some spectacular innovations and mechanical masterpieces on display. Among them were numerous complications, unprecedented displays, new solutions for well-known problems, a new escapement, and the most accurate mechanical wristwatch ever. Vacheron Constantin Les Cabinotiers Solaria Ultra Grande Complication: Most Complicated Wristwatch Vacheron Constantin sets a spectacular…
‘Very rare’ – thus H. Moser & Cie. defines itself. Yet the Schaffhausen-based horology house is now bringing forth an even rarer set of watches than usual in cooperation with the world's largest watch and jewellery retailer Bucherer, in the form of a beautiful Pioneer Tourbillon and two unique Endeavour Concept Minute Repeater Tourbillons. While…