BR-X3 Tourbillon Micro-Rotor — 25 Pieces, ≈$100,000

Originally reported by Time and Tide. This article is a curated summary of their original coverage.

25 pieces. A square case with a prominent sapphire crystal.

The BR-X3 Tourbillon Micro-Rotor arrived in 2025 as Bell & Ross' third-generation take on its square sapphire-capped concept. Paris-based Bell & Ross kept the architectural language — a bold square case with a large, sculpted crystal — and paired it with an open-work movement that foregrounds the mechanics instead of hiding them.

Design and case

Visually the watch reads like a miniature cube with a movement inside. The sapphire crystal is not a mere cover; it’s a defining facet of the case silhouette. The square profile and the transparency create a restrained, almost cubist statement rather than a traditional round-sports-watch look.

Movement and finishing

Bell & Ross combined a tourbillon with a micro-rotor in this open-work movement concept, exposing the regulating organ and winding architecture. The design logic is clear: reduce visual clutter and let the mechanical heart become the dial. The open-work approach keeps the piece technical and sculptural at once.

The BR-X3 places the tourbillon and the micro-rotor front and center, making the movement the focal point of the case.

Edition and positioning

The BR-X3 Tourbillon Micro-Rotor was released as a 25-piece limited edition with a price around $100,000 USD. That packaging — extreme scarcity, transparent cubic case, and a high-end combined tourbillon/micro-rotor caliber — positions the watch at the intersection of experimental design and haute horlogerie.

• Launch year: 2025
• Model: BR-X3 Tourbillon Micro-Rotor
• Edition size: 25 pieces
• Key features: square case, prominent sapphire crystal, open-work movement, tourbillon, micro-rotor
• Approximate price: $100,000 USD

For collectors who prize sculptural design and mechanical display over classical dress cues, the BR-X3 is a deliberate, limited-stakes play. Will Bell & Ross keep pushing the square-sapphire, open-work approach beyond this 25-piece run? That’s the question that will determine whether the BR-X3 remains a rare experiment or the start of a new design line.

Originally reported by Time and Tide. This article is a curated summary of their original coverage.

Tags: Bell & Ross, tourbillon, micro-rotor, sapphire