Richard Mille Bonbon Automatic Reglisse

For sale new watch Richard Mille Bonbon Collection Automatic Reglisse RM16-01 WG-CEM

CALIBRE RM16-01: Skeletonised automatic-winding movement with hours, minutes, date and adjustable rotor

geometry.

Dimensions: 50.20 mm x 38.00 mm x 9.88 mm.

POWER RESERVE

Circa 55 hours (±10%).

BASEPLATE AND BRIDGES MADE OF GRADE 5 TITANIUM

The baseplate and the bridges are crafted of grade 5 titanium, a biocompatible, highly corrosion-resistant and remarkably rigid alloy, which enables the gear train to function effortlessly. The alloy, electroplasma treated, is 90% grade 5 titanium, 6% aluminium and 4% vanadium. This combination further increases the material's mechanical properties, which explains its frequent use in the aerospace, aeronautics and automobile industries.

The skeletonised baseplate and the bridges were subjected to intensive and complete validation tests to optimise their resistance capacities.

DATE DISPLAY

Semi-instantaneous, placed in a vertical aperture at 7 o'clock. The calendar disc of sapphire crystal is treated with nonreflective coating on both sides.

FREE-SPRUNG BALANCE WITH VARIABLE INERTIA

The free-sprung balance offers better reliability in the event of shocks, movement assembly or disassembly, and also guarantees better chronometric results over time. The regulator index is eliminated, and a more accurate and repeatable calibration is possible thanks to 4 small adjustable weights located directly on the balance.

VARIABLE-GEOMETRY ROTOR

The RM 16-01 uses a variable geometry system to optimise the rotor's winding motion.

Rotor specifications

Arm in grade 5 titanium

18K white gold weight segment

Weight segment with 6 positions adjusted by screws in grade 5 titanium - 18K white gold wings, high palladium content

Ceramic ball bearings.

Unidirectional; anti-clockwise winding direction

This exclusive Richard Mille design makes it possible to effectively adapt rewinding of the mainspring to the user's activity level, in sporting or non-sporting environments. By adjusting the six-position rib, the rotor's inertia is modified to either speed up the winding process in the case of leisurely arm movements, or to slow it down during sporting activities.

DOUBLE-BARREL SYSTEM

The double-barrel system helps to improve torque stability over a longer period. This is achieved by distributing the stored energy across two winding barrels instead of one, which increases the number of rotations and reduces pressure on the teeth, bearings and pivots, resulting in better long-term performance.

SPLINE SCREWS IN GRADE 5 TITANIUM FOR THE BRIDGES AND CASE

This permits better control of the torque applied to screws during assembly. These screws are therefore unaffected by physical manipulation during assembly or disassembly and age well.

OTHER FEATURES

Movement dimensions: 30.25 x 28.45 mm

Thickness: 4.44 mm. Jewels: 32

Barrel arbour: in AP 20 steel

Balance: Glucydur, 4 arms, moment of inertia 4.8 mg•cm2, angle of lift 53°

Frequency: 28,800 vph (4 Hz).

Balance spring: elinvar by Nivarox.

Shock protection: INCABLOC 908.22.211.100 (transparent)

Escapement wheel jewels: Rubifix (transparent).

Three-position stem: Manual winding, date, time setting

CASE

This rectangular watchcase marked the first appearance in the Richard Mille collection of a new shape with its own particular identity. It retains the characteristics and attention to detail of previous case designs, with a vast number of stamping and machining operations required for the three main components (bezel, caseband and caseback). The design and execution of the watch exemplify a holistic approach to conception of the movement, case and dial.

Richard Mille has turned to new coloured ceramics for the RM 16-01 Réglisse: blush pink TZP ceramic for the bezel and yellow TZP ceramic for the back case. This low-density material (6g/cm3) is highly scratch-resistant material (1,400 Vickers) and has a low thermal conductivity coefficient.

Constituted of 95% yttrium-stabilised zirconium, TZP has a fine grain that holds a perfect finish. A long and difficult machining and grinding process using diamond tools is necessary to create the complex forms of the bezels..

The RM 16-01 Réglisse caseband is made of white gold, satin finished, microblasted and polished by hand.

The tripartite case is water resistant to 30 metres, ensured by 2 Nitrile O-ring seals, and is assembled using 12 spline screws in grade 5 titanium and abrasion-resistant washers in 316L stainless steel.

DIAL

In grade 5 titanium, black chrome treated Thickness: 1.40 mm

CRYSTAL

Bezel side: in sapphire (1,800 Vickers) with anti-glare treatment (2 sides) Thickness: 1.15 mm. Caseback: in sapphire with anti-glare treatment (2 sides). Thickness: at the center 0.67 mm and outer edges 1.05 mm

FINISHING MOVEMENT

- Baseplate and bridges in hand-ground grade 5 titanium, wet sandblasted, electroplasma treated or Titalyt treated - Burnished pivots. Sandblasted bridges. Diamond-polished sinks on the bridge side

STEEL PARTS

- Sapphire-blasted surfaces. Anglage and polishing by hand. Screw slot and screws beveled and polished with rounded and polished tip

WHEELS

- Sandblasted and rhodium-plated, beveled wheels (before cutting the teeth) Minimal corrections applied to the wheels in order to preserve geometry and performance.

Watch RICHARD MILLE #8924

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