Richard Mille RM 055 49.9 × 42.7mm Manual Winding RMUL2-Type Watch
Inspired by the distinctive RM 055 Bubba Watson design, this tonneau-shaped mechanical sports watch combines a lightweight carbon-fiber composite case, a fully skeletonized dial, and a high-contrast black, white, and red color scheme.
The openworked display reveals the dark bridges, gear train, barrel, and transmission components beneath the sapphire crystal. Grey-black skeletonized hands, circular hour markers, a white inner flange, and red minute accents help separate the time display from the complex mechanical background.
A flexible white rubber strap gives the watch a clean athletic appearance, while the red crown surround adds a vivid motorsport-inspired detail. Inside, the manual-winding RMUL2-type movement uses a free-sprung-style balance architecture designed to support stable regulation without a traditional index regulator.
Key Advantages
- Highly recognizable tonneau-shaped sports-watch profile
- Fully openworked dial displaying the mechanical architecture
- Lightweight carbon-pattern case with a technical layered finish
- Free-sprung-style movement design without a traditional regulator index
- White rubber strap creates a clean and modern athletic contrast
- Red crown detail strengthens the racing-inspired visual identity
- Raised hands and contrasting minute markings improve time readability
- Manual winding provides a direct and engaging mechanical experience
Technical Specifications
| Specification | Details |
|---|---|
| Brand Series | Richard Mille RM 055 Bubba Watson Series |
| Model | RM 055 |
| Watch Type | Tonneau-Shaped Skeleton Mechanical Sports Watch |
| Case Dimensions | 49.9 × 42.7mm |
| Movement | Manual Winding RMUL2-Type Mechanical Movement |
| Balance Regulation | Free-Sprung-Style Balance with Adjustable Weights |
| Dial | Fully Skeletonized Transparent Display |
| Dial Structure | Exposed Bridges, Gear Train, Barrel, and Transmission Components |
| Hands | Grey-Black Openworked Three-Dimensional Hands |
| Hour Markers | Circular Applied Hour Markers |
| Inner Flange | White Inner Flange with Red Minute Scale |
| Case Material | Black Carbon-Fiber Composite with NTPT-Style Layered Texture |
| Crown Detail | Crown with Red Protective Surround |
| Strap | White Rubber Strap |
| Crystal | Sapphire Crystal |
| Water Resistance | Suitable for everyday splashes only. Not suitable for swimming or showering. Please refer to our Water Resistance Care Guide. |
FAQ
1. What is the difference between a free-sprung balance and a traditional regulator?
A traditional regulated movement uses an index or regulator arm to adjust the effective hairspring length. A free-sprung-style system is adjusted through weighted elements on the balance, reducing reliance on a movable regulator index.
2. Is the skeletonized dial difficult to read?
The dial is more visually complex than a conventional solid dial. However, the white inner flange, red minute markings, circular hour markers, and raised grey-black hands help separate the time display from the movement underneath.
3. How should the white rubber strap be cleaned?
Use a soft damp cloth with mild soap, then dry the strap completely. Avoid bleach, alcohol, strong chemicals, and prolonged contact with dark fabrics that may transfer color onto the white surface.
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