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Boxer Floyd Mayweather spotted wearing Jacob & Co

Courtside at an NBA game, Floyd Mayweather sat draped in diamonds from neck to wrist, but it was the piece on his right wrist that commanded attention. The watch in question is the Jacob & Co Billionaire, a creation so encrusted with baguette-cut diamonds that the case and bracelet become almost indistinguishable from pure stone. At an asking price reported at $18 million, this is not a watch — it is a statement of financial sovereignty.

The Jacob & Co Billionaire houses a manually wound skeletonized tourbillon movement, visible through the open-worked rectangular dial. The case is set with approximately 260 carats of emerald-cut white diamonds across the case, lugs, and integrated bracelet, with each stone hand-selected for color and clarity. The rectangular case form echoes classic dress-watch proportions, but nothing about this piece is restrained. Blue-tinted hands — one of the few non-diamond elements — float across the skeletal architecture, providing readable contrast against the transparency of the movement.

Jacob & Co introduced the original Billionaire in 2015, immediately establishing it as the ultimate expression of high-jewelry watchmaking. The New York-born brand founded by Jacob Arabo has long straddled the line between haute horlogerie and fine jewelry, and the Billionaire represents the apex of that dual identity. This particular example is understood to be a unique, one-of-a-kind commission, distinguishing it even from the standard Billionaire references that have since entered limited production.

Mayweather has long been one of the most visible watch collectors in professional sport. His personal collection includes multiple Patek Philippe grand complications, Richard Mille racing pieces, and bespoke Jacob & Co commissions. That he gravitates toward Jacob & Co for high-profile public appearances speaks to his comfort wearing watches as conversation pieces rather than quiet investments.

From a market perspective, the standard Jacob & Co Billionaire — itself extremely limited — has been quoted between $18 million and $20 million at retail, making it one of the highest-priced wristwatches in commercial history. A true 1-of-1 commission carries no comparable grey-market benchmark; provenance and personality drive value entirely. Mayweather wearing it publicly only adds to the piece's documented history.