RICHARD MILLE RM UP-01: The Thinnest Mechanical Watch

Adding a new dimension to the enduring ultra-thin challenge between major haute horlogerie brands, Richard Mille has just created a new world record in the category of thinnest mechanical watch with its new RM UP-01 Ferrari.

With a thickness of just 1.75 mm, the Richard Mille RM UP-01 has surpassed the thinness record established by Bulgari Octo Finissimo Ultra (1.80mm) early this year. Combining most modern designs with performance, aesthetics and ruggedness, the new ultra-thin watch was developed in collaboration with prestigious Italian automotive brand Ferrari.

The RM UP-01 Ferrari is a culmination of many years of work and more than 6,000 hours of development and laboratory testing. Equipped with a robust manual-winding mechanical movement, this extremely thin watch can withstand accelerations of more than 5,000g’s.

RICHARD MILLE RM UP-01: The Thinnest Mechanical Watch
Image Credit: RICHARD MILLE

The Richard Mille RM UP-01 Ferrari has a monobloc case made of grade 5 titanium. Its case-back and bezel are satin-finished, with polished bevels. Secured with 13 grade 5 titanium spline screws and abrasion-proof washers in 316L stainless steel, the ultra-thin case offers a water resistance of 10 meters.

The watch features an out of the ordinary face (bezel) design. It displays the hour and minute on a sub-dial positioned at the upper portion. This small dial is topped with a sapphire crystal glass. On the top right side of the watch face is the sub-dial for the balance, protected with a sapphire crystal glass.

On the top left side, you will find an integrated function selector with two positions: W (winding) & H (hand-setting). The turning crown positioned between 7 and 8 o’clock offer two functions: manual-winding of the movement and time-setting. Both crowns are protected with black ceramic inserts, to ensure water resistance and eliminate friction.

RICHARD MILLE RM UP-01: The Thinnest Mechanical Watch
Image Credit: RICHARD MILLE

This timepiece incorporates a patented ultra-flat escapement jointly developed by Audemars Piguet and Richard Mille. This new type of escapement with a balance wheel in titanium significantly reduces the calibre’s thickness whilst providing the same security as a conventional Swiss anchor escapement. The new patented, ultra-flat escapement eliminates parts like the guard pin and the safety roller to maintain the thinness of the movement.

Displaying hours, minutes and function selector, the hand-wound mechanical movement has a power reserve of 45 hours.

Its base-plate and bridges are made of grade 5 Titanium, a biocompatible, highly corrosion-resistant and robust alloy. The skeletonised baseplate was subjected to separate and extensive validation tests to ensure it met rigorous optimal strength requirements.

RICHARD MILLE RM UP-01: The Thinnest Mechanical Watch
Image Credit: RICHARD MILLE

For this watch, Richard Mille has developed an ultra-thin interpretation of its emblematic tonneau shape. The grade 5 Titanium case is just 1.75mm thick and the movement beating inside has a thickness of 1.18 mm.

The 23 jewel manual-wound ultra-flat movement measures 41.45mm length and 28.85 mm width. It balance frequency is 28’800 vph (4 Hz).

All the titanium case components of this ultra-thin timekeeper are machined at the Richard Mille movement department to meet the extremely demanding machining tolerance of a single micron. The Ferrari prancing horse symbol and all the references present on the case are laser-engraved.

The Richard Mille RM UP-01 watch is available in a limited edition of 150 pieces. It weighs just 30 grams including strap.