Oris · Divers 65

Strap for Oris Divers 65 01 733 7720 4388

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

Lug width21 mm
Case diameter42 mm
Reference01 733 7720 4388
FamilyDivers 65
MovementOris caliber Oris 733 Hours, Minutes, Seconds | Date

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 01 733 7720 4388

Selected for the 21 mm lug width · workshop selection

All 21 mm straps →

The Divers 65 01 733 7720 4388, seen from the bench

The Divers 65 features a 42mm case made of bronze and stainless steel with 21mm lugs. It is powered by the Oris 733 caliber with hour, minute, second and date functions. The reference 01 733 7720 4388 maintains the design inspired by 1960s dive watches.

Frequently asked questions

What is the lug width of the Oris Divers 65 01 733 7720 4388?

The lug width of the Oris Divers 65 01 733 7720 4388 is 21mm, measured between the vertical attachment pins on the case lugs. A 21mm strap will fit without side play or forcing. Always verify the measurement using a digital calliper before ordering a replacement strap.

Which strap is recommended for the Oris Divers 65 01 733 7720 4388?

The ideal strap depends on your intended use. For elegance and durability: vegetable-tanned leather in dark brown or genuine alligator in black. For complete waterproofing and authentic diving use: FKM rubber in dark grey or navy blue. For sporty versatility: a 3-pass NATO nylon strap in navy with stripes. The bronze case pairs beautifully with aged golden patina of aged leather or the deep black of alligator grain.

How do you change the strap on the Oris Divers 65 01 733 7720 4388?

Changing the strap requires removal of the spring bars from the case lugs. Use a spring bar tool to compress the pin inward, freeing one end of the old strap from its lug. Repeat for the other lug. Insert the new strap by pressing the spring bar into its seats until it clicks. Ensure the strap is perfectly aligned with the case. Never force: movement should be smooth and effortless.

Is an aftermarket strap compatible with the Oris Divers 65 01 733 7720 4388?

Yes, provided the aftermarket strap has an exact 21mm lug width. Milano Straps manufactures and verifies every 21mm strap to precision tolerances, guaranteeing absolute compatibility with the Divers 65 01 733 7720 4388. Artisanal leather, rubber and NATO straps from Milano Straps mount seamlessly on the original Oris spring bars whilst maintaining the structural integrity of the case.

What is the lifespan of a leather strap on the Oris Divers 65 01 733 7720 4388?

A vegetable-tanned Tuscan leather strap lasts approximately 3–5 years with daily wear and proper care. Longevity varies based on humidity, water exposure and intensity of use. In humid environments or with frequent immersion, lifespan reduces to 2–3 years. FKM vulcanised rubber resists for 5–7 years under any condition. Regular cleaning with a soft dry cloth and immediate drying after saltwater contact will significantly extend leather strap life.

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