Finished in ceramic with a skeletonized dial, this replica rm-055 231 combines one of the hardest case materials available with the open-movement display that the RM 055 is known for. Ceramic as a watch case material is scratch-resistant, hypoallergenic, and lighter than steel, which makes it practical for daily wear in a way that polished metals cannot match. The tonneau case dimensions remain approximately 49.9 x 42.7mm, consistent with the rest of the 055 family, but the ceramic surface gives the case a smoother, more refined finish than carbon fiber or matte composite alternatives.

Key Specifications

• Case shape: tonneau (barrel)
• Approximate dimensions: 49.9 x 42.7mm
• Case material: ceramic
• Crystal: sapphire
• Strap: rubber with deployant clasp
• Movement: automatic, skeletonized dial
• Water resistance: 50m

The ceramic finish maintains its surface integrity over time because the material rates around 1500 on the Vickers hardness scale, roughly six times harder than stainless steel. Fingerprints and minor contact marks wipe away cleanly without leaving traces.

Design & Finishing

Ceramic cases require precision machining because the material is brittle before the final sintering process. Once completed, the surface takes on a deep, uniform tone that does not fade or patina with age. The skeleton dial reveals the automatic movement beneath, and the clean ceramic bezel frames that view with surgical precision. Richard Mille applies ceramic across several collections, but on the RM 055 it serves a specific purpose: reducing case weight while increasing surface durability. Comparing this ceramic version to the V2 skeleton dial variant highlights how material selection shapes the watch personality. Both sit within the RM 055 range, but ceramic gives a more polished, less industrial impression.

On the Wrist

Ceramic feels different from metal or carbon on the wrist. It warms quickly to skin temperature and maintains that warmth, avoiding the cold-start sensation of stainless steel. The scratch resistance means you spend less time worrying about desk-diving marks or accidental contact with hard surfaces. This replica rm-055 231 puts the durable, lightweight ceramic construction together with the signature tonneau skeleton layout for a version that prioritizes both practicality and long-term surface condition over raw visual drama.