Richard Mille RM 055 Series RM 055 49.90×42.70mm RMUL2 Movement Carbon Fiber Skeleton Watch
The Richard Mille RM 055 combines lightweight carbon-fiber construction with an extensively openworked mechanical design, creating a watch with a distinctly technical and motorsport-inspired character. Its signature 49.90 x 42.70mm tonneau-shaped case features natural layered carbon-fiber patterns that form wave-like textures across the surface, giving the case a dynamic appearance while reinforcing its high-performance aesthetic. At approximately 74g, the watch maintains a notably light presence on the wrist despite its bold dimensions.
Exposed spline-style screws surrounding the bezel emphasize the engineered structure of the case, while the black rubber strap and contrasting black-and-white crown details complete the modern sporting look.
The skeleton dial removes almost all conventional solid surfaces, allowing the movement architecture to become the main visual feature. Gears, bridges, transmission components, and structural elements are displayed across multiple levels, with dark mechanical parts contrasting sharply against the white inner frame. Silver-tone openworked hands cross the center without heavily obscuring the movement beneath.
Circular hour markers and a defined outer minute scale help organize the complex display, while carefully placed red accents introduce an energetic racing-inspired touch. The result is a highly technical skeleton sports watch that combines lightweight materials, distinctive carbon texture, and visible mechanical depth in one unmistakable tonneau-shaped design.
Key Advantages
- Natural layered carbon-fiber patterns give the case a distinctive high-tech appearance
- Openworked architecture turns the exposed mechanical structure into the main visual attraction
- White inner detailing creates strong definition against the darker movement components
- Subtle red accents add a controlled motorsport-inspired character to the monochrome design
- Exposed spline-style screws reinforce the precision-engineered identity of the tonneau case
- Black rubber strap complements the technical case design with a clean, modern sports finish
Technical Specifications
| Specification | Details |
|---|---|
| Brand / Series | Richard Mille RM 055 Series |
| Model | RM 055 |
| Type | Skeleton Mechanical Sports Watch |
| Case Size | 49.90 x 42.70 mm |
| Movement | RMUL2 Movement |
| Case Material | Carbon Fiber |
| Dial | Skeleton Dial |
| Strap | Black Rubber Strap |
| Weight | Approx. 74g |
| Crystal | Sapphire Crystal |
| Water Resistance | Suitable for everyday splashes only. Not suitable for swimming or showering. Please refer to our Water Resistance Care Guide. |








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