- Movement
- Manual winding tourbillon chronograph
- Size
- 50.70 mm diameter × 19.10 mm per the carbon coverage; 19.20 mm per the launch datasheet
Overview
Carbon execution of the RM 025 diver’s tourbillon chronograph
The RM 025 was first released in titanium with lugs in 18ct red gold. A carbon version followed, shown at Watches & Wonders in Hong Kong and reported in January 2015. The round case is water resistant to 300 metres, a depth only achievable in Richard Mille’s range with a round form rather than the tonneau.
The dial distinguishes this execution from the titanium and red gold original: the five-minute markers of the first quarter are printed in white rather than red, with the remaining numerals in light grey. The strap is Kalrez® perfluoroelastomer, made by Biwi SA, chosen for resistance to chemical absorption and to heat.
Key details
Case materialCarbon
MovementCalibre RM025, manual winding tourbillon chronograph
Water resistance300 m
Design and engineering
- Carbon nanofibre baseplateThe baseplate is carbon nanofibre, moulded at 7,500 N/cm² and 2,000 °C for physical and chemical stability. It is a movement component, distinct from the case material, and the two should not be conflated.
- Titanium column wheelThe chronograph runs on a column wheel in titanium, operated by the pusher at 8 o’clock and reset from the pusher at 10 o’clock. Producing the column wheel and levers in titanium reduces inertia and lowers energy consumption by circa 50%.
- Unidirectional bezelThe bezel turns in one direction only and is held by a screw system attaching it to the case, so it cannot be loosened or dislocated inadvertently.
- Function indicatorA hand at 4 o’clock shows W, N or H — winding, neutral or hand-setting — when the crown is drawn out.
- Torque indicatorPositioned to the right of the movement’s barrel, reporting the tension of the mainspring; the power-reserve indication sits to the left.
- Kalrez® strapThe strap is perfluoroelastomer Kalrez®, manufactured by Biwi SA, which resists absorption of chemicals and foreign matter and tolerates temperature change.
- Movement finishingHand polishing, sapphire-blasted surfaces, chamfering, circular finishing and burnishing.
Specifications
Technical specifications
| Reference | RM 025 |
|---|---|
| Calibre | RM025 |
| Movement | Manual winding tourbillon chronograph |
| Functions | Hours, minutes, seconds, chronograph, 30-minute totaliser, power-reserve indicator, torque indicator, function indicator |
| Power reserve | 50 hours per the carbon coverage; circa 70 hours per the launch datasheet |
| Frequency | 21,600 vph |
| Movement dimensions | 38.95 mm diameter × 8.12 mm |
| Tourbillon diameter | 12.30 mm |
| Baseplate | Carbon nanofibre, moulded at 7,500 N/cm² and 2,000 °C |
| Movement basis | Calibre RM 008 |
| Case dimensions | 50.70 mm diameter × 19.10 mm per the carbon coverage; 19.20 mm per the launch datasheet |
| Case shape | Round |
| Case material | Carbon |
| Case construction | Tripartite, lugs integrated into the case’s torque screw system |
| Bezel | Unidirectional, screwed to the case; 22 screws per the carbon coverage, 24 per Richard Mille’s model page |
| Chronograph | Titanium column wheel; start/stop pusher at 8 o’clock, reset at 10 o’clock |
| Dial | Five-minute markers of the first quarter in white, remaining numerals light grey |
| Crown | Torque limiting |
| Crystal | Sapphire |
| Water resistance | 300 m |
| Strap | Kalrez® perfluoroelastomer, by Biwi SA |
| Year | Shown at Watches & Wonders Hong Kong; reported January 2015 |
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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