Oris · Divers 65

Strap for Oris Divers 65 01 771 7744 4354

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

Lug width21 mm
Case diameter43 mm
Reference01 771 7744 4354
FamilyDivers 65
MovementOris caliber Oris 771 Additional 12 hours Hand (adjustable), hours, minutes, small seconds | date | Chronograph

Spring bar

Swiss Standard universal spring bars

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

Straps for the Divers 65 01 771 7744 4354

Selected for the 21 mm lug width · workshop selection

All 21 mm straps →

The Divers 65 01 771 7744 4354, seen from the bench

The Divers 65 features a 43mm case made of bronze and stainless steel with 21mm lugs. It is powered by the Oris 771 calibre with hours, minutes, small seconds, date, chronograph, and adjustable 12-hour hand functions. The model offers GMT indication via the additional 12-hour hand.

Frequently asked questions

What is the exact lug width of the Oris Divers 65 ref. 01 771 7744 4354?

The lug width of the Divers 65 01 771 7744 4354 is exactly 21 millimetres. This dimension is determined by the anatomy of the integrated lugs on the case and is non-negotiable. To verify it, remove the original strap using a spring bar tool and measure the internal space between the lugs with a digital calliper. Ensure that your new strap has precisely 21 mm lug width, otherwise it will not seat correctly into the spring bars.

What is the best strap material for the Oris Divers 65 with 21mm lug width?

For the Divers 65, we recommend Italian vegetable-tanned leather in brown or cognac tones, which ages harmoniously alongside the bronze patina of the case. Alternatively, a cotton and nylon NATO offers sporting versatility and practicality, whilst structured rubber is ideal for regular diving or those seeking extreme water resistance. Your choice depends on intended use: leather for timeless elegance, NATO for versatility, rubber for underwater functionality.

How do I change the strap on an Oris Divers 65 watch?

You will need a spring bar tool (or a small flathead screwdriver). Remove the watch from your wrist and observe the two spring bars located inside the lugs. Insert the pointed end of the spring bar tool into one of the spring bar holes to release the internal spring, then extract the old strap. Repeat on the opposite side. Insert the new spring bars into your replacement strap (verifying it is 21 mm lug width), then seat the bars into the case lugs until you hear a click of confirmation.

Can I use third-party compatible straps on the Divers 65 01 771 7744 4354?

Yes, you may use premium aftermarket straps provided the lug width is precisely 21 millimetres. Select specialist manufacturers who craft artisanal straps in premium materials such as vegetable-tanned leather, alligator or shell cordovan, as well as structured rubber or NATO textile straps. Avoid bargain straps of questionable construction: strap quality directly impacts comfort and longevity of wear.

How long does a natural leather strap last on the Divers 65?

A quality leather strap, crafted from vegetable-tanned leather and full-grain thickness, typically lasts between 4 and 7 years with normal daily use. Longevity depends upon exposure to perspiration, moisture and maintenance standards. To extend lifespan: avoid prolonged bathing (the Divers 65 is water-resistant, but leather straps dislike soaking), apply specialist leather balms periodically, and allow complete drying after each water contact. A well-maintained strap can reach 10+ years, developing a beautiful patina.

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