Oris · Aquis

Strap for Aquis Date 43.5 Oceano Pulito con Umberto Pelizzari

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter44 mm
Reference01 733 7730 4105-Set
FamilyAquis
MovementOris caliber Oris 733 hours, minutes, seconds | date
Year2022 - 2024
CaseCeramic, Stainless Steel

Spring bar

Swiss Standard universal spring bars

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

Straps for the Aquis 01 733 7730 4105-Set

Selected for the 20 mm lug width

All 20 mm straps →

The Aquis 01 733 7730 4105-Set, seen from the bench

The Oris Aquis represents the Swiss brand's line of dive watches, equipped with the Oris 733 automatic caliber. The movement offers hour, minute, second and date indication. The reference 01 733 7730 4105-Set identifies this specific configuration of the Aquis collection.

Frequently asked questions

What is the lug width of the Oris Aquis 01 733 7730 4105-Set?

The lug width of the Oris Aquis 01 733 7730 4105-Set is 20 mm. This measurement represents the internal distance between the case lugs where the strap attaches. It is an intermediate standard that reflects the proportional balance of the 43.50 mm diameter case.

Which strap is most suitable for this Oris model?

The ideal strap depends on intended use. For elegance and versatility, we recommend alligator leather or vegetable-tanned calf with genuine depth that ages beautifully alongside the dial. For sports practicality, a satin NATO strap or vulcanised rubber strap maintains the Aquis' tool-watch aesthetic without compromising robustness.

How do you change the strap on an Oris Aquis 01 733 7730 4105-Set?

The change occurs via small spring bar pins that pass through the lugs. Using a spring bar tool (sold separately or included in maintenance kits), compress the pins and extract the old strap. Insert the new strap by aligning the holes to the lugs, then allow the pins to return to their locked position. The operation takes minutes and requires no specialist tools.

Can I use high-quality aftermarket straps on this Oris?

Absolutely. The Oris Aquis 01 733 7730 4105-Set is compatible with any strap measuring 20 mm wide with standard thickness (approximately 3–4 mm). Artisanal leather straps or technical materials offer elegant and durable alternatives to original straps, often at lower cost.

How long does a leather strap last on a diver watch like this?

A quality leather strap (alligatore, vegetable-tanned calf, or shell cordovan) lasts an average of 3–5 years with daily wear, accounting for maintenance and protection from prolonged immersion. Rubber and synthetic materials resist longer (5–8 years), though noble leathers develop patina and character over time, compensating for natural wear with aged elegance.

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