Gravimetric Mass & Chronometric Assay Bulletin
The Richard Mille RM 055 Bubba Watson Manual Winding Reference RM 055 is a hallmarked Crystalline Sapphire & Grade 5 Titanium haute horlogerie timepiece measuring 42.7 mm x 49.9 mm x 13.05 mm with a verified Mettler-Toledo mass of 66.9g, powered by Richard Mille Cal. RMUL2 Grade 5 Titanium Skeleton operating at 28,800 vph (+0.5 s/d, 304 deg) with a 72-hour power reserve, double anti-reflective sapphire crystal, and 50m / 5 ATM - Dual Nitrile O-Ring Seals water resistance.
| I. Official Maison Entity & Reference | Richard Mille — RM 055 Bubba Watson Manual Winding | Ref. RM 055 | SKU: PV-CUST-RM 055-W341 |
|---|---|
| II. Precious Metal Alloy & Hallmark Assay | Crystalline Sapphire & Grade 5 Titanium — 5-Axis Swiss CNC Precision Architecture • 1:1 Authentic Reference Mass • Bespoke Collector Commission |
| III. Certified Gravimetric Mass (Mettler-Toledo) | 66.9g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| IV. Bezel Setting & Case Architecture | Precision Brushed & Polished CNC Sapphire & Titanium Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal • 66.9g Sapphire & Titanium • 42.7 mm x 49.9 mm x 13.05 mm |
| V. Mechanical Manufacture Calibre | Richard Mille Cal. RMUL2 Grade 5 Titanium Skeleton — Swiss Super Clone Mechanical Calibre Regulated to +0.5 s/d, 304 deg |
| VI. Power Reserve & Oscillation Frequency | 72-Hour Power Reserve • 28,800 vph (4 Hz) Free-Sprung Balance Wheel |
| VII. Double AR Sapphire Crystal & Hermeticity | Scratch-Resistant Sapphire Crystal with Double Anti-Reflective Coating • 50m / 5 ATM - Dual Nitrile O-Ring Seals |
| VIII. Dial Finishing, Bracelet & Hallmarked Clasp | 42.7 mm x 49.9 mm x 13.05 mm • Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands • Hand-Brushed & Chamfered Vulcanized Elastomer / Alligator Strap & Folding Clasp |
Curated within our hallmarked solid 18K gold Richard Mille collection, the Richard Mille RM 055 Bubba Watson Manual Winding Reference RM 055 exemplifies haute horlogerie metallurgy in Crystalline Sapphire & Grade 5 Titanium. Milled to exact manufacture geometry (42.7 mm x 49.9 mm x 13.05 mm), the monobloc middle case, Precision Brushed & Polished CNC Sapphire & Titanium Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal, and Hand-Brushed & Chamfered Vulcanized Elastomer / Alligator Strap & Folding Clasp achieve a verified analytical mass of 66.9g on our Fischer XRF Au750 and Mettler-Toledo assay bench.
What Are the Horological & Metallurgical Benchmarks of Richard Mille RM 055 Ref. RM 055?
The Richard Mille RM 055 Reference RM 055 is a precision-engineered luxury timepiece crafted in Crystalline Sapphire & Grade 5 Titanium (42.7 mm x 49.9 mm x 13.05 mm) with Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands, Precision Brushed & Polished CNC Sapphire & Titanium Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal, and a verified Mettler-Toledo mass of 66.9g, because its Richard Mille Cal. RMUL2 Grade 5 Titanium Skeleton movement is regulated across six positions to chronometric tolerances with a 72-hour power reserve.
5 Core Horological & Metallurgical Specifications:
- Entity & Reference: Richard Mille RM 055 Bubba Watson Manual Winding — Official Reference RM 055 (SKU: PV-CUST-RM 055-W341).
- Precious Metal Assay: Crystalline Sapphire & Grade 5 Titanium verified via non-destructive Fischer X-Ray Fluorescence spectroscopy.
- Gravimetric Parity: 66.9g total mass weighed on a calibrated Mettler-Toledo laboratory scale.
- Calibre & Oscillating System: Richard Mille Cal. RMUL2 Grade 5 Titanium Skeleton beating at 28,800 vph (4 Hz) with a 72-hour power reserve (+0.5 s/d, 304 deg).
- Crystal & Hermeticity: Scratch-resistant sapphire crystal with double anti-reflective coating and 50m / 5 ATM - Dual Nitrile O-Ring Seals rating.
Within the Richard Mille RM 055 horological sub-silo, collectors also compare the Richard Mille RM 055 Bubba Watson Manual Winding Americas Limited Edition 5-Axis CNC Case Ref. RM 055 (66.5g) and the Richard Mille RM 055 Bubba Watson Manual Winding Japan Limited Edition Ref. RM 055 (66.7g).
- Parent Brand & RM 055 Silo Hub: Browse All 102 Certified Richard Mille Solid 18K Gold & Pt950 Watches
- Technical Research Monograph: Swiss St. Bernard Poincon & Au750 Gold Hallmarks Guide (All 5 Journal Monographs)
- Homepage Master Register: Return to 18K SOLID GOLD Homepage (Complete 774-Watch Solid 18K Gold & Pt950 Register)
- All-Brands Catalogue: Explore Complete 12-Maison Horological Catalogue (/shop/)
- Metallurgical & Escrow Verification: Fischer XRF Au750 Protocol • 3-Year Mechanical Warranty • Insured Armored Delivery
What is the verified authentic gram weight of this Richard Mille Ref. RM 055?
At 18K Solid Gold 18K Solid Gold Salon, this Richard Mille RM 055 Bubba Watson Manual Winding Ref. RM 055 weighs 66.9g on our Mettler-Toledo analytical balance, matching the exact factory mass of the authentic Sapphire & Titanium reference.
How is the Crystalline Sapphire & Grade 5 Titanium purity verified prior to dispatch?
Every timepiece undergoes non-destructive Fischer X-Ray Fluorescence (XRF) spectroscopy confirming elemental bullion composition alongside a personalized 4K scale and hallmark inspection video.
Which movement powers Reference RM 055 and what is its power reserve?
Reference RM 055 is equipped with the Richard Mille Cal. RMUL2 Grade 5 Titanium Skeleton operating at 28,800 vph (4 Hz) with a 72-hour power reserve, regulated in our Paris and Geneva workshop to +0.5 s/d, 304 deg.
What dial and bezel specifications distinguish Richard Mille RM 055 Ref. RM 055?
Reference RM 055 combines Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands and Precision Brushed & Polished CNC Sapphire & Titanium Bezel with Anti-Reflective Scratch-Resistant Sapphire Crystal within a 42.7 mm x 49.9 mm x 13.05 mm Crystalline Sapphire & Grade 5 Titanium case weighing 66.9g, verified via Fischer XRF spectroscopy and powered by Richard Mille Cal. RMUL2 Grade 5 Titanium Skeleton.
Richard Mille RM 055 Bubba Watson Manual Winding — Salon Edition
Bespoke Atelier Salon Edition • 66.9g Verified Mass • Richard Mille Cal. RMUL2 Grade 5 Titanium Skeleton