- Case
- Tonneau
- Size
- 44.50 × 49.94 × 16.15 mm
Overview
The cable-suspended polo tourbillon in white
The case here is a white layered composite, its striations running across the notched profile that gives the RM 53-01 its structural stiffness. The strap is pale blue.
The construction is unchanged: a manual-winding tourbillon suspended inside the case on braided cable, read through laminated sapphire glass built from two sheets separated by a polyvinyl film, so that a mallet strike cracks the glass without shattering it.
Key details
Case materialWhite layered composite
Power reserveCirca 70 hours (± 10%)
MovementCalibre RM53-01, manual winding tourbillon
Design and engineering
- Laminated sapphire glassA horological first, developed with Stettler and taking its principle from automotive laminated glazing.
- Cable-suspended calibreThe 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 grade 5 titanium baseplate and bridgesBlack PVD treated, the doubling adding rigidity.
- Notched case profileThe notches are structural, reinforcing the case rather than decorating it.
- Free-sprung balance with variable inertiaAdjustment by four setting screws, with no regulator index.
- Sapphire casebackThe suspension system and the hand-finished bridges are legible from the reverse.
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 | White layered composite |
| Crystal | Laminated sapphire — two sheets with polyvinyl interlayer |
| Strap | Pale blue |
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.
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