Đồng hồ Richard Mille RM 033 Automatic Winding Extra Flat

Movement diameter: 33.00 mm
Thickness: 2.60 mm
Number of jewels: 29
Barrel arbour: AP 20 steel
Balance: Glucydur®, 4 arms, moment of inertia 5.75 mg•cm², angle of lift 53°
Frequency: 21,600 vph (3 Hz)
Balance spring: Nivaflex®
Shock protection: INCABLOC 908.22.211.100 (transparent)
Escapement wheel jewels: Rubifix (transparent)
Two-position stem: Manual winding, hand setting

CASE

The case retains the same characteristic attention to detail found in all Richard Mille creations, with a vast number of stamping and machining operations required for this round case, which reaches a total thickness of merely 6.30 mm.

The design and execution of the watch demonstrate a holistic approach to conception of the movement, case and dial. For example, a casing ring is no longer used and the movement is mounted on chassis mounting rubbers (ISO SW), affixed by grade 5 titanium screws.

The tripartite case is assembled with 16 spline screws in grade 5 titanium and abrasion-resistant washers in 316L stainless steel, further complemented by integration of the lugs into the case’s torque screw system. The tripartite case is water resistant to 30 metres, ensured by 2 Nitrile O-ring seals.

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.