The Biver AB Debuts As The Brand’s First Stainless Steel Watch With A New Manually Wound Movement

Biver introduces its first stainless steel watch, the new AB, short for Acier Biver. Developed in response to customer demand, the AB combines a 38mm steel case with a remarkably slim 9.8mm profile and a brand-new manually wound movement. A sophisticated dial construction creates impressive depth, while the black-and-gold aesthetic delivers understated luxury rather than overt spectacle. Despite its lofty price point, the AB may be the most approachable watch in the young brand’s catalog.

Biver Watches may be a relatively new name, but the people behind it are anything but newcomers. Few figures have shaped modern Swiss watchmaking as profoundly as Jean-Claude Biver, whose influence spans brands including Blancpain, Omega, Hublot, and TAG Heuer. In 2023, he and his son Pierre launched Biver Watches as a personal project focused on traditional craftsmanship and mechanical refinement.

Biver AB

The AB embodies that philosophy through a deceptively simple time-only display. Biver is best known for highly complicated watches in precious metals, yet the AB strips everything back to the essentials. At first glance, it appears restrained. A closer look reveals an extraordinary level of detail. The centerpiece is a 2N yellow-gold dial finished with a fine-grained black DLC coating. It may seem counterintuitive to conceal the luster of gold beneath a dark surface, but its warm champagne tone emerges to frame the dial’s center and the small-seconds display at 6 o’clock.

This construction allows the dial to be sculpted from a single piece of gold, creating remarkable depth. As on previous Biver models, the hour and minute track uses stone elements. This time, the material of choice is onyx, whose deep black sheen pairs beautifully with the 2N gold hour markers and railroad minute track, both applied using a metallization process. The overall effect feels highly classical, almost reminiscent of decorative motifs found on finely crafted Grecian urns.

Hidden power

Perhaps the most intriguing detail is the power reserve indicator. It is so discreetly integrated that many people may overlook it at first glance. Tucked beneath 12 o’clock and arcing between 11 and 1, the display uses a miniature 2N gold pointer to track the remaining 120 hours of power reserve. As the reserve depletes, the indicator gradually shifts from right to left. A polished gold frame ensures the complication remains visible without disturbing the dial’s symmetry.

Completing the display are razor-sharp dauphine hands crafted from 18k yellow gold. Satin finishing and hand-beveled edges elevate them to the same standard as the rest of the watch and reinforce the AB’s balance of restraint and refinement.

The stainless steel case

As Biver’s first stainless steel watch, the AB has a lot riding on it. Jean-Claude Biver built part of his reputation during the era when luxury steel watches began challenging the dominance of precious metals, making this release feel like a natural extension of that legacy.

With its 38 × 9.8mm case, the AB is also the brand’s most compact watch to date. Those dimensions lean toward traditional dress-watch territory and contrast with the continuing trend toward larger luxury sports watches.

The signature protruding lugs remain a defining feature of the case. Most surfaces receive a satin finish, while hand-beveled edges catch the light and emphasize the construction’s complexity. The result is technical yet elegant, with the finish creating contrast without softening the design.

A new bracelet approach

That naturally raises a question: how do you pair such distinctive lugs with a bracelet?

Rather than blending the bracelet seamlessly into the case, Biver deliberately separates the two. The 19mm-wide bracelet adopts the brand’s recurring trapezoidal motif while omitting a traditional end link. This arrangement allows the lugs and case finishing to remain fully visible while still delivering a comfortable fit.

Quick-release spring bars make it easy to swap to the supplied Bahia calfskin strap, allowing owners to alternate between sportier and more formal personalities with minimal effort.

An impressive manual-winding movement

The AB also introduces Biver’s first manually wound caliber. The new JCB-004 uses twin barrels to deliver an impressive 120-hour power reserve when fully wound. Hand-finished to the same exacting standard as the brand’s Carillon Tourbillon and Automatique models, the movement showcases the level of craftsmanship collectors have come to expect from Biver. The caliber retains one of the most practical features introduced with the Automatique. Pulling out the crown instantly resets the small-seconds hand to zero, allowing precise time-setting without waiting for the seconds hand to complete a full rotation.

Both the mainplate and bridges are crafted from PD210, a white gold alloy with a higher palladium content to enhance corrosion resistance. The material eliminates the need for nickel or rhodium plating, placing even greater emphasis on the finishing’s quality. Circular graining, sandblasting, mirror polishing, and hand-finishing remain fully exposed.

As with every Biver watch, a single watchmaker oversees the assembly process from start to finish rather than passing the watch through a production line.

Final thoughts, specs, and pricing

What impresses most about the AB is not any single feature. Rather, it’s how Biver successfully balances restraint with complexity. A time-only display can sometimes feel like an excuse to do less. Here, it becomes an opportunity to do everything better. The hidden power reserve indicator, layered gold-and-onyx dial construction, and beautifully finished manual-wind movement reward close inspection. Sapphire crystals protect both sides of the watch, with a subtle dome and internal antireflective coating preserving the dial’s depth and richness.

Naturally, that level of execution comes at a price. The Biver AB retails for CHF 68,000, placing it firmly among precious-metal competitors despite its stainless steel case.

You can learn more about the Biver AB on the brand’s website.