A true synthesis of the identity of its collections, the RM 30-01 stays true to Richard Mille’s key values: ergonomics, pure lines and exceptional finishes. The RM 30-01 Automatic with Declutchable Rotor epitomises not only the quintessence of the brand, but also the many aesthetic adventures experienced by Richard Mille for over twenty years.

The winding of an automatic wristwatch is accomplished by a small rotor that revolves when moved. Its cyclical movement provides energy to the winding barrel, which reaches its optimal tension once it is fully wound. After this point, excess tension due to overwinding can easily occur and must be avoided. This is traditionally achieved using a sliding flange that allows the spring to slip, preventing the movement from becoming overwound.
However, this traditional system allows harmful debris to build up inside, as the flange brakes on the winding barrel’s interior overextended periods, especially when a person is particularly active.

Highlights

Gender	Men
Brand	Richard Mille
Model No.	RM 30-01
Movement	Automatic Winding with Declutchable Rotor
Calibre	RMAR2 - Skeletonised automatic-winding movement with hours, minutes, seconds, oversize date, clutch engagement and power-reserve indicators, function selector and declutchable variable-geometry rotor.
Power Reserve	Around 55 hours (± 10%).
Case Diameter	42 x 49.9 mm
Case Material	This version is offered in a case where the middle case is made of titanium, which is combined with the upper and lower parts of 5N pink gold.
Dial	Skeleton dial. Transparent.
Water Resistance	5 bar (~50 m)
Bracelets Material	Rubber
Rotor specifications	Central flange in grade 5 titanium Heavy metal weight segment 18K white gold wings with 5 possible positions adjusted by screws in grade 5 titanium Ceramic ball bearings Unidirectional anti-clockwise winding
Movement dimensions	31.25 x 29.45 mm
Thickness	5.41 mm
Jewels	38
Barrel arbour	AP 20 steel
Balance	Glucydur®, 4 arms, 4 setting weights, 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)
Functions	Hours, minutes, seconds, and Declutchable Rotor
Condition	Brand New In Box (BNIB)
What's Inside Box:	1x Richard Mille Automatic Butterfly 42 - RM 30-01 with Declutchable Rotor Rose Gold Rubber Strap 1x Official Richard Mille 1x Watch Box