- Size
- 52.63 × 34.40 × 13.05 mm
Overview
Gold leaf worked into Quartz TPT
This execution of the RM 74-02 uses Gold Quartz TPT®, a composite in which leaves of 22-carat 5N pink gold are embedded between stacked sheets of quartz fibre, so that the gold shows through the pale, translucent material as warm striations running the width of the case. It was developed with North Thin Ply Technology over several years.
The movement is the CRMT5, whose baseplate and bridges are made of gold rather than titanium: an 18K 5N red gold baseplate under 18K 3N yellow gold bridges, both microblasted and bevelled by hand.
The RM 74-01 and RM 74-02 were released together in 2021, sharing an ultra-skeletonised automatic tourbillon architecture with the tourbillon at 6 o’clock, and differing in the materials of their cases and of their movements.
Key details
Design and engineering
- Calibre CRMT5Skeletonised automatic winding tourbillon movement with hours, minutes and a variable-geometry rotor, 30.70 × 23.70 mm by 6.20 mm thick, on 23 jewels at 28,800 vph (4 Hz), with around 50 hours of power reserve.
- Gold baseplate and bridgesThe baseplate is 18K 5N red gold and the bridges 18K 3N yellow gold, both microblasted and bevelled by hand. A bevelled flange with festooned edges follows the lines of the movement.
- Gold Quartz TPT®Ultra-thin sheets of quartz fibre are stacked layer upon layer with leaves of 22-carat 5N pink gold embedded between them, then heated to 120°C at a pressure of 6 bar and machined at Richard Mille. The natural striations differ on every case.
- Free-sprung balance with variable inertiaCuBe, four arms and four setting weights, moment of inertia 7.5 mg·cm², angle of lift 50°, with an AK3 balance spring and Incabloc 908.22.211.100 shock protection. The regulator index is eliminated in favour of four adjustable weights on the balance.
- Variable-geometry rotorHeavy outside edge and edge ring in 18K red gold with a platinum weight segment, on the OneWay® winding system in ceramic with ball bearings, bidirectional.
- Fast-rotating barrelOne revolution every five hours instead of seven and a half.
- Gear-teeth profileThe whole going train uses a special profile with a 20° pressure angle, which Richard Mille states equalises discrepancies arising between wheel centres through thermal change and normal use.
- Case constructionTripartite, water-resistant to 50 m via two nitrile O-ring seals, assembled with 20 grade 5 titanium spline screws and abrasion-resistant 316L stainless steel washers.
Specifications
Technical specifications
| Reference | RM 74-02 |
|---|---|
| Calibre | CRMT5, skeletonised automatic winding tourbillon |
| Functions | Hours, minutes, variable-geometry rotor |
| Power reserve | Around 50 hours (± 10%) |
| Frequency | 28,800 vph (4 Hz) |
| Jewels | 23 |
| Movement dimensions | 30.70 × 23.70 mm |
| Movement thickness | 6.20 mm |
| Tourbillon | At 6 o’clock |
| Balance | CuBe, 4 arms, 4 setting weights, inertia 7.5 mg·cm², lift angle 50° |
| Balance spring | AK3 |
| Shock protection | Incabloc 908.22.211.100 |
| Barrel | Fast rotating, 5 hours per revolution instead of 7.5 |
| Going train | 20° pressure angle |
| Case dimensions | 52.63 × 34.40 × 13.05 mm |
| Case assembly | 20 grade 5 titanium spline screws, 316L washers |
| Crystal | Sapphire; sapphire caseback |
| Water resistance | 50 m, two nitrile O-ring seals |
| Baseplate | 18K 5N red gold, microblasted, hand-bevelled |
| Bridges | 18K 3N yellow gold, microblasted, hand-bevelled |
| Rotor | Variable geometry; 18K red gold edge and edge ring, platinum weight segment, OneWay® with ceramic ball bearings, bidirectional |
| Case material | Gold Quartz TPT®, with 22-carat 5N pink gold leaves |
| Strap | Black rubber |
Buying with HYPA
Purchase with confidence
- Manufacturer warranty confirmed from the warranty card
- Insured worldwide delivery
- Payment by bank transfer or cryptocurrency
- Registered Australian dealerHYPA International Pty Ltd · Victorian Second-Hand Dealer Licence SHD-0018017.
- Direct specialist supportSpeak with the HYPA team before, during and after the purchase.
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