Introducing the Bell & Ross BR-X3 Micro-Rotor

In 2025, Bell & Ross unveiled the BR-X3 Tourbillon Micro-Rotor, a Haute Horlogerie timepiece featuring a square manufacture movement combining a tourbillon and micro-rotor, housed within the iconic BR-03 case. A radical proposition at the crossroads of precision instrument and horological manifesto. In 2026, Bell & Ross takes this collection ethos one step further. More accessible in its execution, the BR-X3 Micro-Rotor was born from a conviction: Haute Horlogerie is not defined by complication alone.

The BR-X3 Micro-Rotor adopts the 40 mm BR-03 case and its four signature screws foundational elements of Bell & Ross — visual DNA since the creation of the iconic “circle within a square” in 2005. But in this piece, the square goes far beyond visual identity. It becomes structure. Unlike conventional watches, where the movement is simply housed inside a case, the BR-X3 Micro-Rotor fuses the two. The square case middle directly serves as the supporting structure for the movement’s bridges: case and calibre become one. This radical construction relies on only three components: a central steel plate forming the case-movement block, an upper sapphire crystal, and a lower sapphire crystal. The result is complete transparency and minimalist architecture where nothing is superfluous everything is essential.

At the heart of the BR-X3 Micro-Rotor beats a manufacture automatic calibre with micro-rotor, designed by the Bell & Ross teams. This technical choice is far from incidental. Unlike a traditional oscillating weight positioned above the movement, the micro-rotor is integrated within the thickness of the calibre itself. It delivers equivalent winding performance while significantly optimizing the overall slimness total thickness is contained to just 9 mm and, above all, fully revealing the mechanics. The movement features 29 jewels, a 50-hour power reserve, and is covered by a 5-year warranty. The BR-X3 Micro-Rotor is produced in a limited series of 99 pieces.

Time is displayed in its purest expression. Two photoluminescent hands—for hours and minutes—blend into the dial’s grid. No seconds hand. The seconds are not displayed; they are suggested by the visible oscillation of the balance wheel, a living reminder of the mechanics in motion. Where the BR-X3 Micro-Rotor Tourbillon of 2025 featured a visible tourbillon cage and off-centered time display, the BR-X3 Micro-Rotor opts for central hands and a traditional balance. A more classical execution in its references, yet faultless in its finishing. This is not a watch designed for instant legibility. It is a manifesto piece that demands from its wearer the same gaze one gives to architecture, to an artwork, to an object conceived down to its finest detail.