The BR 01 was the square watch that launched Bell & Ross to worldwide fame. Debuted in 2005, the shape—a square case with a round dial and four screws—was inspired by the instrument panel of a fighter jet, complete with highly legible numerals. It was a hit upon its release and quickly became a Bell & Ross icon.

Recognising its potential, the BR 01 went from a sizable 46mm to the BR 03 in a wrist-friendlier 42mm. Since then the BR 03 has undergone various permutations, experimenting with new materials and complications. 

Read more: Bell & Ross unveils the limited edition BR 03-94 Blacktrack

The BR 03 got even smaller last year, from 42mm to 41mm, and the new size was introduced in a collection of eight references. The new dimensions call for an update of its internal engine too, a new automatic movement with a robust 54-hour power reserve. The French-Swiss brand most recently released the BR 03 Gyrocompass that pays tribute to its aeronautical origin with the silhouette of an airplane on the dial.

Speaking from the Bell & Ross headquarters in Paris, CEO Carlos Rosillo gives a deeper insight into the evolution of the BR 01 and BR 03.