Oris · Aquis

Strap for Aquis Date 36.5 Stainless Steel / Blue - Diamond / Bracelet

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

Lug width18 mm
Case diameter37 mm
Reference01 733 7731 4195-07 8 18 05P
FamilyAquis
MovementOris caliber Oris 733 hours, minutes, seconds | date
CaseTungsten, 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 7731 4195-07 8 18 05P

Selected for the 18 mm lug width

All 18 mm straps →

The Aquis 01 733 7731 4195-07 8 18 05P, seen from the bench

The Oris Aquis 01 733 7731 4195-07 8 18 05P features a 36.50mm stainless steel case with tungsten elements, integrating the Oris caliber 733 mechanical movement with date window. Water-resistant to 300 metres, the watch combines compact proportions with an 18mm lug width that balances the 10.45mm case height and 36.50mm dial. The domed sapphire crystal with inner anti-reflective coating enhances readability under strong lateral light, while the movement delivers hours, minutes, seconds and date indication with standardised maintenance architecture.

Frequently asked questions

What is the lug width of the Oris Aquis 01 733 7731 4195-07 8 18 05P?

The Oris Aquis 01 733 7731 4195-07 8 18 05P features an 18mm lug width, measured from inner lug to inner lug. This dimension is the constructive standard Oris established to maintain visual proportions between the 36.50mm case and integrated bracelet. To verify aftermarket strap compatibility, use a digital calliper with ±0.1mm precision, positioning it perpendicularly across the lug shoulders.

Which strap is best suited to this Aquis design and intended use?

For this diver tool watch, shell cordovan represents the optimal aesthetic and functional choice: its natural fibrous structure resists salt moisture better while developing a rich patina over time. Genuine alligator adds tactile sophistication with geometric texture contrast. For frequent water exposure, vulcanised rubber straps maintain superior grip and quick drying. Satin cotton or ripstop nylon NATO straps excel in informal daily contexts.

How do I change the strap on this watch?

The Aquis features a standard integrated lug design: identify the lateral pins securing the lug to the case shoulders. Use a dedicated push-pin tool or non-abrasive plastic lever to push the pin laterally until fully extracted. Align the new strap with the lug and reinsert the pin, ensuring symmetric seating. Avoid torsional stress during this operation to prevent lug deformation.

What aftermarket straps are compatible with this Oris Aquis?

Any handcrafted strap with an 18mm lug width is fully compatible with the Aquis 01 733 7731 4195. Milano Straps offers leather (cordovan, alligator, calf), NATO and rubber straps in 18mm, all ready to ship. Pin finish and constructive tolerance have been validated to ensure mounting without mechanical adjustment requirements.

How long does a leather strap last on this model with frequent water use?

A shell cordovan or alligator strap, with proper maintenance (post-saltwater drying, quarterly conditioning), retains structural integrity for 4–6 years of moderate-to-intensive water exposure. Vegetable-tanned leather visibly ages but remains functional. With predominantly land-based use, longevity extends to 7–10 years. Rubber straps require annual inspection for UV stress but offer superior durability in marine environments.

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