THE ART OF WATCHMAKING

Craftsmanship

INNOVATIONS

Movements
B.R.M Chronographes

Some of our models house movements made internally, based on existing Swiss movements. Others, like the Birotor, the R50s, and the Tourbillon, have movements made entirely at our factory to give them a specific look, like that of a car engine.

Isolastique® principle and casing ring

In accordance with its patented “isolastique®” principle, B.R.M Chronographes mounts the flexible movement on carbon arms. These in turn are kept under pressure within a casing ring by variable-pitch springs, which isolate the movement from shocks and all other extraneous vibrations, just as an engine is isolated from the chassis by silentblocs. This protection supplements the shock absorbers mounted on balance fulcrums. Another way to ensure the movement’s proper function.

Shock Absorber

All watches in the Golf collection have a floating movement mounted on three shock absorbers and three cylinders to ensure the complete absorption of shocks. Thanks to this unique, made-in-France technology, our timepieces let you move freely on the greens.

Materials

Carbon

Used for dials and cases.
It has the virtue of being highly durable and lightweight.

Titanium

Used for cases, crowns, crown protectors, horns, screws, backs, buckles.
Lightweight and tough, it is also resistant to rust, ductile, and fire retarding.

Fortal HR®/AU4G

Used for the backs and shock absorbers of watches in the Golf collection.
Fortal HR® is a hard aluminum that enables a certain amount of light machining whilst maintaining a certain durability.
Moreover, this waterproof material will not turn yellow or green over time.

Bronze

Used for cases, crowns, crown protectors, lugs, backs, buckles.
Yellow to start with, this material develops a patina over time, resulting in a unique color.

Makrolon®

Used for cases.
Lightweight and unbreakable, Makrolon® was originally used in the manufacture of racecar windshields and fighter-plane cockpit canopies. Its chief drawback is that it easily warps and is therefore hard to work with. After years of trial and error, we have achieved tolerances down to the hundredth of a millimeter and can now use Makrolon® to fashion parts with high precision.

Technical fabric

Used for watch straps.
A synthetic shape-memory material that can withstand the harshest treatment. To guarantee comfort on the wrist, it is lined with calf leather (the same kind used for our leather bands). We use it for its light weight and durability.

Sapphire crystal

Sapphire is known for its resistance to scratches and shocks. At B.R.M Chronographes we use a thickness of 1.5 mm for the majority of our watches, whereas most watches on the market use 1 mm.

Stainless steel

Used for cases, crowns, crown protectors, lugs, screws, backs, buckles.
We use only 316L, a hypoallergenic, food-grade stainless steel that will not rust over time.

MACHINING

At our watchmaking factory every part is machined separately, so that we can assemble various precious materials and composites, such as titanium, bronze, aluminum, Makrolon® and carbon.

This sort of modular construction, which derives from the luxury automotive industry, enables us to oversee the unique manufacture and finish of each piece.

Our cases, which consist of 18 parts, are cut and machined from the block from solid bars. The manufacture of our dials requires 20 decals. Our watch hands are openwork, like the pedals of the Italian automobile industry, and painted by hand.

The buckles and tongues of our watch straps are also machined from the block, with 9 pieces in the buckle and 12 in the double buckle.

THE FACTORY