- Movement
- Automatic winding, skeletonised
- Size
- 47.00 mm diameter × 14.60 mm
Overview
Titanium execution of the diver’s watch
The standard titanium RM 028, in a round three-part case of 47.00 mm by 14.60 mm. Richard Mille departed from its tonneau for the diving watches because the depth rating requires a round case; the RM 028 followed the RM 025 into that format at a slightly smaller diameter.
The calibre RMAS7 is skeletonised, in grade 5 titanium, with hours, minutes, central seconds, a semi-instantaneous date and a variable-geometry rotor driving two barrels for 55 hours.
Key details
Case materialTitanium
MovementCalibre RMAS7, automatic winding
Water resistance300 m, ISO 6425
Design and engineering
- Double-push-button bezel securityRotation requires the 30-minute button and the raised arrow button to be pressed simultaneously, anticlockwise only.
- Three-part case with integrated lugsThe 300-metre rating follows from the tripartite construction, the torque screws and the lugs being drawn into the case system.
- Variable-geometry rotorTwo 18ct white gold wings allow the winding rate to be matched to the wearer’s activity.
- Two barrels55 hours of power reserve.
- Date at 7 o’clockIn a vertical aperture, with a sapphire date disc.
The reference
Technical specifications
| Reference | RM 028 |
|---|---|
| Calibre | RMAS7 |
| Movement | Automatic winding, skeletonised |
| Functions | Hours, minutes, central seconds, semi-instantaneous date, variable-geometry rotor |
| Power reserve | 55 hours |
| Frequency | 28,800 vph (4 Hz) |
| Jewels | 32 |
| Barrels | Two |
| Baseplate and bridges | Grade 5 titanium |
| Case dimensions | 47.00 mm diameter × 14.60 mm |
| Case shape | Round, tripartite |
| Rotor | Variable geometry, two 18ct white gold wings |
| Case material | Titanium |
| Bezel | Unidirectional, three layers, 22 torque screws, double-push-button security |
| Dial | Sapphire with carbon fibre flange; date at 7 o’clock with sapphire date disc |
| Crystal | Sapphire, anti-glare both faces |
| Water resistance | 300 m, ISO 6425 |
| Strap | Grey rubber |
Buying with HYPA
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