Independent Watchmakers · 2026-10-16
Biver’s AB brings a hand-wound gold movement to steel
The 38 mm AB is Biver’s first steel watch and its first hand-wound model, pairing an onyx-and-gold dial with a 120-hour calibre.
By Chronolume digest · Original English summary · Based on Biver official editorial and product page
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What to know
Biver’s AB, short for Acier Biver, introduces two firsts for the young independent maison: a stainless-steel case and a manually wound movement. The newly drawn 38 mm case is 9.8 mm thick and water-resistant to 8 ATM. Its layered dial combines a black-DLC-treated 18k 2N-gold base with a polished onyx outer ring, gold hands and a discreet power-reserve display at 12 o’clock.
Inside, the proprietary JCB-004 uses two barrels for a stated 120-hour reserve and resets the small seconds when the crown is pulled. Its mainplate and bridges are made from palladium-rich PD210 white gold, while the gear train uses 2N yellow gold. The steel five-link bracelet includes a 4 mm micro-adjustment; an anthracite calf strap is also supplied. Biver lists the AB through its retailers and direct enquiries, while launch reporting quotes CHF 68,000.
At a glance
| Case | Stainless steel |
|---|---|
| Diameter | 38 mm |
| Thickness | 9.8 mm |
| Water resistance | 8 ATM / 80 m |
| Movement | Biver JCB-004, manually wound |
| Power reserve | 120 hours |
| Functions | Hours, minutes, small seconds, power-reserve indication, zero-reset |
| Dial | 18k 2N yellow gold with black DLC and polished onyx outer ring |
| Bracelet | Five-link steel bracelet with 4 mm micro-adjustment |
| Additional strap | Anthracite Bahia calf |
| Reported price | CHF 68,000 |
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Source & attribution
Biver official editorial and product page · Published 2026-10-14 ↗
