Audemars Piguet · Royal Oak

Strap for Royal Oak Selfwinding 77321 Pink Gold / Diamond / Brown / Rubber

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width18 mm
Case diameter33 mm
Reference77321OR.ZZ.D080CA.01
FamilyRoyal Oak
MovementAudemars Piguet caliber AP 2240 Hours, Minutes, Seconds | Date
CasePink Gold

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

The Royal Oak 77321OR.ZZ.D080CA.01, seen from the bench

The Royal Oak 77321OR.ZZ.D080CA.01 is a refined interpretation of the octagonal Royal Oak family created by Gérald Genta in 1972. Crafted in 18-karat rose gold with a 33mm case, it features eight visible hex screws, a satin-polished bezel, and a Tapisserie dial with characteristic relief chevrons. The AP 2240 automatic micro-rotor caliber provides approximately 60 hours of power reserve within a 3.05mm-thick movement. Functions include hours, minutes, seconds, and date. Water-resistant to 50 meters, the case accommodates an 18mm lug width, determining compatible strap selection.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only