Cover Richard Mille has unveiled a watch with a transparent sapphire case where mechanical movement is a statement of freedom

Richard Mille has unveiled the RM 75-01 Flying Tourbillon Sapphire (RM 75-01), a watch with a transparent sapphire case where mechanical movement becomes a statement of freedom and modern thinking.

Like a giant dewdrop frozen in a perfect moment, the RM 75-01 Flying Tourbillon Sapphire opens a world where light and mechanics dance together. The transparent sapphire case not only encases the movement, but also invites an intimate gaze into every mechanical beat where time is fully revealed, pristine and unhidden.

Richard Mille does not pursue luxury in solid gold or sparkling gemstones. Instead, sapphire is chosen, a material both transparent and resilient, and so challenging to work that it becomes the ultimate engineering test. Every curve, every cut of the RM 75-01 is designed so that light does more than reflect: it penetrates, diffuses, and merges with the gears, bridges, and tourbillon. Each detail contributes to a symphony of mechanics and optics.

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Above Richard Mille has created the RM 75-01 Flying Tourbillon Sapphire (RM 75-01)

Like a gothic cathedral submerged underwater, the RM 75-01 conveys both majesty and delicacy. Within this seemingly weightless space, the flying tourbillon CRMT5 floats like a beating heart. There are no layers of concealment, no superfluous metaphors: just the honesty of engineering, where beauty springs from precision and the courage to reveal all secrets.

Sapphire – when light is part of the design

The RM 75-01 draws inspiration from both the underwater world and grand gothic architecture. Its exquisite details, honed over four years of development, are crafted from a single block of sapphire crystal, requiring over 1,000 hours of meticulous machining, including 430 hours shaping components with precision and 350 hours of polishing and fine finishing.

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Above Richard Mille’s design evokes the underwater world and majestic gothic architecture
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Above Richard Mille’s design evokes the underwater world and majestic gothic architecture
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Above The exquisite details are the result of over 1,000 hours of meticulous craftsmanship
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Above The exquisite details are the result of over 1,000 hours of meticulous craftsmanship

Sapphire is second only to diamond in hardness, yet this very hardness presents the greatest technical challenge. Richard Mille confronts it directly, transforming the sapphire shell into a load-bearing frame that unites the entire mechanical structure.

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Above Every curve and cross-section of the case is calculated to maximise light transmission

Every curve and cross-section of the case is calculated to maximise light transmission. Light becomes a design material, illuminating and merging with the internal mechanism as a living component. The result is a near-transparent space, where every movement is displayed with absolute clarity, unadorned and unshielded.

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Above Every curve and cross-section of the case is calculated to maximise light transmission

Mechanical heart and show philosophy

At the centre of the RM 75-01 lies the CRMT5 flying tourbillon, developed and hand-finished in Les Breuleux. The “flying” tourbillon appears to float in mid-air, a marvel of mechanical ingenuity.

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Above Richard Mille elevates precision, lightness, and transparency
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Above The central bridge uses grade 5 titanium, paired with an adjustable inertia balance wheel to control oscillations

This is not merely a performance achievement: Richard Mille elevates precision, lightness, and transparency. The central bridge uses grade 5 titanium, paired with an adjustable inertia balance wheel to control oscillations. The skeletonised movement maintains a stable 65-hour power reserve, remarkable for an entirely openworked structure.

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Above The skeleton framework is entirely visible, from gears to bridges, baseplate to screws

No cover conceals the mechanics. The skeleton framework is entirely visible, from gears to bridges, baseplate to screws. This honesty reflects Richard Mille’s philosophy: true beauty arises from engineering integrity, not decoration.

Postmodern aesthetics from a century-old tradition

Richard Mille does not rely on centuries of tradition or classical icons. Luxury is redefined through craftsmanship, technology, and minimalism: every component serves a functional purpose while achieving peak aesthetic sophistication.

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Above Model RM 75-01 Clear Sapphire
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Above Model RM 75-01 Clear and Blue Sapphire
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Above Model RM 75-01 Clear and Lilac Sapphire

The RM 75-01 Flying Tourbillon Sapphire collection includes three limited editions: two models combining transparent and coloured sapphires, each limited to 10 pieces, and one model showcasing the pure transparency of sapphire, limited to 15 pieces.

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