Oris · Aquis

Strap for Aquis Date 40 Stainless Steel / Black / Rubber

Takes 21 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width21 mm
Case diameter40 mm
Reference01 733 7676 4154-07 4 21 34
FamilyAquis
MovementOris caliber Oris 733 hours, minutes, seconds | date
CaseStainless 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 7676 4154-07 4 21 34

Selected for the 21 mm lug width · workshop selection

All 21 mm straps →

The Aquis 01 733 7676 4154-07 4 21 34, seen from the bench

The Oris Aquis Date 40 Stainless Steel model (ref. 01 733 7676 4154-07 4 21 34) features a 40mm brushed stainless steel case with 300m water resistance. It houses the Oris 733 caliber movement (ETA-based, 25 jewels, 28,800 vph) with date window at 3 o'clock and sapphire crystal with anti-reflective coating. The strap lug width is precisely 21mm, requiring geometrically exact strap compatibility to ensure secure fit without premature wear. This model represents the Aquis dive watch collection heritage.

Frequently asked questions

What is the exact lug width of the Oris Aquis 01 733 7676 4154-07 4?

The lug width of the Oris Aquis 01 733 7676 4154-07 4 is precisely 21mm. This specification is critical: a 20mm strap will present excessive play, whilst a 22mm strap struggles in the housing. Correct measurement is performed by positioning a digital calliper between the two lugs, perpendicular to the case plane.

What is the best strap for the Aquis 01 733 7676 4154-07 4?

No universal choice exists. For contemporary elegance, we recommend Nile alligator with natural rectilinear grain. For aesthetic development over time, vegetable-tanned calf in cognac or tan tones is ideal. For intensive and marine use, vulcanised rubber or canvas NATO offers practicality without technical compromise. Selection depends on usage context and desired personal character.

How do I change the strap on my Oris Aquis whilst maintaining compatibility?

The Aquis features non-standard integrated lugs. Removing the old strap requires gently extracting the spring bars from the internal shoulders of the case. Installing the new strap (21mm exact) means sliding the terminals into the housings with firm but controlled pressure. Never force: precise geometry means instantaneous compatibility. We recommend using dedicated tools (spring bar tool) to prevent case scratching.

Can I use an aftermarket strap from a different brand on my Aquis?

Yes, provided the lug width is certified 21mm. Many artisanal quality straps (such as those from Casati Milano) are constructed specifically for this width. Caution: generic straps from e-commerce sites risk not meeting exact tolerance, causing lateral movement or premature wear of spring bars. Always choose specialists who guarantee centesimal measurements.

How long does a leather strap last on the Oris Aquis in daily wear?

A high-quality artisanal leather strap (alligator, calf, shell cordovan) lasts 3-5 years in moderate daily use. Longevity depends on ambient humidity, bathing frequency, maintenance. Vegetable-tanned leather develops protective patina over time, increasing resistance. A NATO or rubber strap, less porous, extends lifespan to 7-10 years. We recommend seasonal rotation: leather in winter, fabric/rubber in summer, to optimise overall lifecycle.

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