Oris · Aquis

Strap for Aquis Date 36.5 Stainless Steel / White - 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 4191-07 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 4191-07 8 18 05P

Selected for the 18 mm lug width

All 18 mm straps →

The Aquis 01 733 7731 4191-07 8 18 05P, seen from the bench

The Oris Aquis 01 733 7731 4191-07 8 18 05P is a 36.50mm stainless steel diving watch with unidirectional bezel, baton indices, and Arabic numerals at 12-3-6-9. It features the Oris caliber 733 movement with hours, minutes, seconds, and date window at 3 o'clock, visible through the sapphire caseback. The integrated 18mm lug width connects directly to the case without visible welds. Water-resistant to 300 meters, this watch combines essential diving functionality with proportionate design.

Frequently asked questions

What is the exact lug width of the Oris Aquis 01 733 7731 4191-07 8 18 05P?

The lug width is 18mm. This measurement reflects the proportional relationship between the 36.50mm case diameter and the dial width. Verify compatibility by measuring the distance between the strap attachment pins: 18mm is the international standard that guarantees full interchangeability with aftermarket straps of the same width.

What is the best strap for the Oris Aquis 36.50mm?

The choice depends on intended use. An alligator strap with vegetable tanning offers formal elegance whilst maintaining technical character; a perforated calf provides daily practicality with drainage; a NATO Cordura strap ensures robustness and modularity; FKM rubber represents the ideal solution for professional aquatic environments. Each material responds to different aesthetic and functional requirements.

How do I change the strap on this model?

The Aquis 01 733 7731 4191-07 8 18 05P features an integrated lug with standard attachment pins. The procedure requires a simple spring bar tool to release the lower and upper lugs. No intervention on the watch itself is necessary. Straps in 18mm width insert quickly into the same anchor holes.

Are aftermarket 18mm straps compatible with this Oris?

Yes, fully compatible. The 18mm lug width is the recognised international standard. Any quality strap constructed with standard 18mm pins fits the Aquis 01 733 7731 4191-07 8 18 05P without modification. Milano Straps offers a complete selection of straps in this size, from artisanal leather to technical fabrics.

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

A quality leather strap (alligator or calf) withstands 3-5 years of daily use, considering exposure to humidity, chlorine and UV rays. Durability increases if the strap is not subjected to prolonged immersion and if periodically maintained (gentle cleaning, conditioning). For intensive aquatic use, FKM rubber is recommended, guaranteeing 5-7 years of reliability without deterioration.

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