A watch that hides its own engine is common. A watch that builds the case around the engine so you can never stop staring at it is rare. That is exactly what Bell & Ross has done with the new BR-X3 Micro-Rotor, a limited-run timepiece that turns the brand’s signature square silhouette into a display case for its own mechanics.
Only 99 pieces of this watch will ever exist, and each one is priced at €22,000, which works out to roughly ₹23.96 lakh at current exchange rates. That price tag places it firmly in collector territory rather than everyday wear, but the engineering inside deserves attention even from readers who will never own one.
What a Micro-Rotor Actually Is
Before going further, it helps to explain the term in the watch’s name. In a regular automatic watch, wrist movement spins a metal weight called a rotor, which winds the mainspring and keeps the watch powered without a manual crank. Most rotors sit on top of the movement like a lid, blocking the view of the gears underneath.
A micro-rotor does the same job but sits flush inside the movement itself instead of stacking on top of it. The result is a noticeably thinner watch and, more importantly for this piece, an unobstructed view straight through to the mechanical parts doing the work. Bell & Ross first used this construction on the BR-X3 Tourbillon Micro-Rotor in 2025 and has now brought the same idea to a simpler, more attainable version.
Design and Case Construction
The BR-X3 Micro-Rotor carries a 40mm satin-finished and polished steel case, just 9mm thick, built around the brand’s familiar circle-in-a-square shape with four exposed corner screws. What sets it apart from a standard case is that the movement and the case are effectively one piece. A central steel plate does double duty as both the case middle and the base of the movement, and it sits sandwiched between two sapphire crystals, one on the front and one on the back.
There is no traditional dial here. Instead, vertical and horizontal bridges form a skeletonised grid, meaning most of the metal that would normally cover the mechanism has been cut away and arranged into a deliberate geometric pattern rather than left as bare gaps. Two lume-filled hands for hours and minutes are the only markers, glowing blue at night thanks to Super-LumiNova X1 BGW9 treatment. The automatic Calibre BR-CAL.390 movement inside carries 28 jewels, a 48-hour power reserve, and a 5-year warranty, all visible through the open construction rather than hidden away.
| Specification | Detail |
|---|---|
| Case diameter | 40mm |
| Case thickness | 9mm |
| Case material | Satin-finished and polished steel |
| Movement | Automatic Calibre BR-CAL.390, micro-rotor |
| Power reserve | 48 hours |
| Water resistance | 50 metres |
| Crystal | Anti-reflective sapphire, front and back |
| Strap | Grey alligator-embossed calfskin |
| Buckle | Folding, satin-finished and polished steel |
| Limited edition | 99 pieces worldwide |
| Price | €22,000 (approx. ₹23.96 lakh) |
Price and Availability in India
Bell & Ross timepieces are sold through the brand’s own boutiques and a small network of authorised watch retailers rather than through mass e-commerce platforms, and a piece limited to 99 units globally is unlikely to see broad online listings anywhere, including in India. Ethos and similar authorised dealers typically carry the brand’s regular collections, though allocation for limited editions like this one usually runs through Bell & Ross directly.
For readers exploring the brand more broadly or looking for something in a similar aviation-inspired, mechanical watch category, browsing what is currently listed can be a useful starting point. See what’s listed here.
Accessories Worth Pairing With a Watch Like This
A skeletonised automatic watch like the BR-X3 Micro-Rotor benefits from proper care, especially since the open construction means dust and moisture exposure show up faster than on a closed dial. Here are a few practical accessories for anyone building out a mechanical watch collection.
| Accessory | Why It Helps | Link |
|---|---|---|
| Watch winder box | Keeps automatic movements running when not worn daily | Browse options |
| Watch travel case | Protects the case and strap during transit | Browse options |
| Microfiber watch cloth | Safe cleaning for sapphire crystal and steel without scratching | Browse options |
| Watchmaker’s loupe | Lets you actually appreciate the skeletonised bridge work up close | Browse options |
The Bottom Line
The BR-X3 Micro-Rotor is not a watch most people will buy on impulse, and with only 99 pieces made, most people will not get the chance to buy it at all. What makes it worth knowing about is the engineering decision at its core: instead of hiding the mechanism behind a dial, Bell & Ross built the entire case to celebrate it. For a brand best known for legible, instrument-style watches, this is a shift toward treating the movement itself as the display.
Whether or not this exact piece ends up on anyone’s wrist, it signals where the BR-X3 line is headed, and that is a direction worth watching.