Built in a limited edition of just 5 pieces — the Bell & Ross Transparent Chronograph Tourbillon Sapphire BR-X1 — unveiled to the world earlier this year — is available for sale now, and marks a new era for the brand’s high-tech chronograph. The watch is meticulously machined from six pieces of sapphire, making it totally transparent.
That transparency beautifully showcases the flying tourbillon and mono pusher chronograph that are built into the Caliber BR-CAL.285 hand-wound movement with four days of power reserve. The 45mm sapphire case is accented with a translucent rubber and kevlar reinforced strap and features a skeletonized dial.
Cutting a watch case from a solid block of sapphire is an extremely difficult process. It takes long hours of machining, then polishing, to produce one. The case is cut from six blocks of sapphire: middle piece, back, top, crystal and the two bumpers and is assembled with screws. It retails for $500,000.