Richard Mille Diver’s Watch RM028

Richard Mille RM028

Richard Mille’s first foray into the dive watch genre was the $495,000, RM025 tourbillon chronograph measuring 50.7mm in diameter and 19.1mm thick. His new RM028 diver is more in tune with the times – a bit smaller and a bit simpler. The RM028 measures 47mm x 14.6mm and it offers hours, minutes, central seconds and date. But like all Richard Mille creations, it contains its fair share of interesting technical features and exotic materials.

The chief weapon in the 028’s technical arsenal is Mille’s exclusive variable rotor geometry that allows the owner to adjust the watch to wind faster or slower, to account for the owner’s activity level. The curved, three-piece case is titanium, as are the movement’s bottom plate, bridges and balance cock. The case is water resistant to 300 meters.

The skeletonized movement is powered by twin barrels to improve the stability of torque over a longer period. The power reserve is 55 hours. The rotor uses an arm and flange in grade 2 titanium, ribs in 18-carat, high palladium content white gold, a weight segment in tungsten/cobalt alloy and ceramic ball bearings. The bottom plate and bridges are hand-ground with anglage and polish by hand. The date display is located at 7 o’clock and the sapphire calendar disk is anti-reflective coated on both sides. The sapphire crystal is 3mm thick.

Additional technical information appears below the images, which you can can enlarge with a click.

Richard Mille RM028
Richard Mille RM028

Additional Features

– Dimensions of movement: 30.25 x 28.45 mm
– Thickness: 4.33 mm
– Number of jewels: 32
– Barrel arbor – in AP 20 steel
– Balance: GLUCYDUR, 3 arms, inertia moment 4.8 mg cm2, angle of lift 53º
– Frequency: 28,800 vph (4 Hz)
– Balance spring: ELINVAR NIVAROX
– Shock protection: INCABLOC 908.22.211.100 (transparent)
– Escapement wheel jewels: Rubifix (transparent)
– Stem with three positions: manual winding, time setting, date adjustment



– Bottom plate and bridges in hand-ground titanium, wet sandblasted, PVD treated
– Anglage and polishing by hand
– Locking sections hand polished
– Burnished pivots
– Diamond polished sinks on the bridge side
– Pinions with undercuts
– Sandblasted and rhodium-plated, beveled wheels

Steel Parts

– Sapphire blasted surfaces
– Anglage and polishing by hand
– Screw slot and screws beveled and polished with rounded and polished tip

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