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Richard Mille is the most radical proposition in contemporary watchmaking. Founded in 2001 by French entrepreneur Richard Mille in partnership with Dominique Guenat of Guenat SA, the brand arrived with the RM 001 Tourbillon, a watch so technically extreme and architecturally avant-garde that it redefined what a luxury watch could look like and what it could cost. Richard Mille's design philosophy was rooted not in tradition but in aerospace engineering: Grade 5 titanium, carbon fibre, ceramic ball bearings, variable geometry rotors, tripartite cases requiring hundreds of individual machining operations. The brand's characteristic tonneau shape, rounded at top and bottom, angular in the middle, became instantly iconic, worn on the wrists of Rafael Nadal during Grand Slams, of Formula 1 drivers at speed, of athletes whose wrists moved faster and harder than any conventional watch was designed to endure. By the time of the RM 016's arrival in 2007, Richard Mille had already redefined what a watch could be. Then it asked a different question entirely: what if it were flat?
Richard Mille Rectangular Watches: Key References
| Reference | Introduced | Movement | Key Specification |
|---|---|---|---|
| RM 016 Auto Extra Flat | 2007 | Calibre RMAS7 | 49.8mm x 38mm, 8.25mm thin, Grade 5 titanium |
| RM 016 Titalyt | 2009 | Calibre RMAS7 | Electro-plasma oxidized titanium finish |
| RM 16-02 | 2025 | Calibre CRMA9 | 4.12mm movement thickness, free-sprung balance |
The RM 016 - A New Shape, The Same DNA
Introduced in 2007 as the first rectangular watch in the Richard Mille collection, the RM 016 Automatic Extra Flat was the result of a design brief that inverted everything the brand had done before. Where Richard Mille's tonneau-shaped watches began from vertical architecture, the height of the mechanical structure, the RM 016 began from the opposite constraint: it was to be as flat as possible. The movement had to be spatially extended along the horizontal plane, spreading outward rather than building upward. The result required more than 18 days of machine adjustment before production could begin, more than 400 hours of technical research, and 202 separate machining operations per case.
The tripartite case, bezel, caseband, caseback, measures approximately 49.8mm x 38mm with a thickness of just 8.25mm. It is made from Grade 5 titanium and hugs the wrist with the ergonomic precision that Richard Mille demands of every product. The tapered lugs drop downward to follow the wrist's curvature, ensuring that despite its size, the RM 016 wears with the intimacy of a skin-contact instrument. The movement, Calibre RMAS7, is a skeletonised automatic calibre with a variable geometry rotor, a device unique to Richard Mille that allows the winding mechanism to be adjusted to the wearer's activity level. Behind the sapphire caseback, the titanium bridges and plates are finished to a standard more commonly associated with traditional Swiss manufacture than with a brand built on engineering and speed.
A New Era in Richard Mille's Catalogue
The RM 016 was not just a watch, it was a statement about the boundaries of the Richard Mille concept. In 2009, a Titalyt version was unveiled: Grade 5 titanium treated with an electro-plasma oxidation process borrowed from aerospace, medical, and automotive industries, which increases the metal's hardness and corrosion resistance to a degree that no conventional surface treatment achieves. The Titalyt finish gives the case a colour unique in watchmaking, an oxidized, slightly iridescent tone that is visually striking and technically meaningful simultaneously.
RM 16-02 - The Next Generation Rectangle
In 2025, Richard Mille updated the rectangular lineage with the RM 16-02, equipped with the new Calibre CRMA9. At just 4.12mm thick, the CRMA9 is optimised for the ultra-flat profile while incorporating a free-sprung balance for consistent performance under shock conditions, an engineering challenge that traditional ultra-thin movement designers have often solved by sacrificing shock resistance. Richard Mille solved it by refusing to sacrifice anything. The RM 16-02 is, in that sense, perfectly in character: a watch that pushes harder at the limits it encounters, rather than accepting them.
The Flat Mille
Among the extraordinary things Richard Mille has built since 2001, the rectangular watches represent something particular: the proof that the brand's technical philosophy is not dependent on any single case shape. The RM 016 was a departure, but not an anomaly. It was Richard Mille being Richard Mille, in a rectangle.
For the full story of how rectangular watches evolved across the major houses, see the complete history of rectangular watches. For the best rectangular watches available today at every price point, see the best rectangular watches in 2026. For the definitive category reference, see The Definitive Guide to Rectangular Watches.
Frequently Asked Questions
Does Richard Mille make rectangular watches?
Yes. Richard Mille introduced its first rectangular watch, the RM 016 Automatic Extra Flat, in 2007. The RM 016 required more than 400 hours of technical research and 202 machining operations per case. In 2025 the lineage was updated with the RM 16-02, equipped with the new Calibre CRMA9 at 4.12mm movement thickness. Both represent the brand's engineering philosophy applied to the ultra-flat rectangular format.
What is the Richard Mille RM 016?
The RM 016 Automatic Extra Flat is Richard Mille's first rectangular watch, introduced in 2007. It measures 49.8mm x 38mm with a total thickness of 8.25mm. The case is made from Grade 5 titanium using a tripartite construction requiring 202 separate machining operations. The Calibre RMAS7 automatic movement features a variable geometry rotor unique to Richard Mille. The sapphire caseback reveals the skeletonised titanium movement with decorated bridges and plates.
What is the Titalyt finish on the Richard Mille RM 016?
Titalyt is an electro-plasma oxidation process borrowed from aerospace, medical, and automotive industries. Applied to Grade 5 titanium, it increases surface hardness and corrosion resistance beyond what any conventional coating or plating achieves. The process gives the case a distinctive oxidized, slightly iridescent tone. The Titalyt version of the RM 016 was introduced in 2009.
What is the Richard Mille RM 16-02?
The RM 16-02 is the 2025 update to Richard Mille's rectangular collection. It is equipped with the new Calibre CRMA9, whose movement measures just 4.12mm thick - significantly thinner than the original RM 016's Calibre RMAS7. The CRMA9 incorporates a free-sprung balance for shock resistance, solving an engineering challenge that traditional ultra-thin movement designers typically address by sacrificing shock protection.
How does Richard Mille's rectangular watch compare to the Cartier Tank?
They represent opposite ends of the rectangular watch spectrum. The Cartier Tank prioritises proportion, restraint, and 107 years of continuous design refinement. The Richard Mille RM 016 prioritises engineering extremity - aerospace materials, skeletonised movement, variable geometry rotor, 202 machining operations per case. The Tank is the benchmark of rectangular dress watchmaking. The RM 016 is its antithesis: a rectangular watch that happens to be formal in shape but is radical in every other dimension. For the full category context, see The Definitive Guide to Rectangular Watches.
