
- Case
- Tonneau
- Size
- 44.50 × 49.94 × 16.15 mm
- Edition
- 30 pieces
Overview
A tourbillon suspended on braided cable, behind laminated sapphire
Polo is a contact sport played at a gallop, and a conventional tourbillon would not survive it. The RM 53-01 answers that with two solutions at once: a movement suspended inside the case on braided cable rather than bolted to it, and a glass that cracks without shattering.
The laminated sapphire is a first in watchmaking — two sheets of sapphire separated by a thin polyvinyl film, developed with the sapphire specialist Stettler and borrowed in principle from automotive glazing. The case is Carbon TPT®, on a blue strap.
Key details
Edition30 pieces
Power reserveCirca 70 hours (± 10%)
Case dimensions44.50 × 49.94 × 16.15 mm
Design and engineering
- Laminated sapphire glassTwo sheets of sapphire separated by a thin polyvinyl film, carrying anti-reflective and UV coatings — a patent-pending Richard Mille exclusive developed with the sapphire specialist Stettler, and a horological first. Under the shockwave of a mallet strike it cracks without breaking apart.
- Cable-suspended movementThe calibre hangs within the case on braided cable rather than being bolted to it, so shocks reaching the case walls are absorbed before they reach the movement.
- Double baseplate and bridges in grade 5 titaniumThe doubled construction adds stiffness, which both protects the movement and keeps the going train running smoothly under load.
- Carbon TPT® casePunctuated by notches that reinforce its structural integrity.
- Free-sprung balanceGlucydur®, two arms and four setting screws, moment of inertia 11.50 mg·cm², angle of lift 53°.
- Tourbillon at 12.40 mmWith a 10.00 mm balance, both large relative to the compactness of the calibre.
Specifications
Technical specifications
| Reference | RM 53-01 |
|---|---|
| Calibre | RM53-01, manual winding tourbillon |
| Functions | Hours, minutes; tourbillon |
| Power reserve | Circa 70 hours (± 10%) |
| Movement dimensions | 31.94 × 30.26 mm |
| Movement thickness | 6.35 mm |
| Tourbillon diameter | 12.40 mm |
| Balance diameter | 10.00 mm |
| Jewels | 19 |
| Balance | Glucydur®, 2 arms, 4 setting screws, moment of inertia 11.50 mg·cm², angle of lift 53° |
| Baseplate and bridges | Grade 5 titanium, double construction, black PVD treated |
| Movement mounting | Suspended on braided cable |
| Case | Tonneau |
| Case dimensions | 44.50 × 49.94 × 16.15 mm |
| Case material | Carbon TPT® |
| Crystal | Laminated sapphire — two sheets with polyvinyl interlayer, anti-reflective and UV coatings |
| Strap | Blue |
| Introduced | 2018 |
| Edition | 30 pieces |
Buying with HYPA
Purchase with confidence
- Manufacturer warranty confirmed from the warranty card
- Insured worldwide delivery
- Payment by bank transfer or cryptocurrency
- Registered Australian dealerHYPA International Pty Ltd · Victorian Second-Hand Dealer Licence SHD-0018017.
- Direct specialist supportSpeak with the HYPA team before, during and after the purchase.


