Oris · Divers 65

Strap for Divers Sixty-Five 40 Social Club Edition / Xi'an

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter40 mm
Reference01 733 7707 4051 OSC-XAN-Set
FamilyDivers 65
MovementOris caliber Oris 733 ND Hours, Minutes, Seconds
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

The Divers 65 01 733 7707 4051 OSC-XAN-Set, seen from the bench

The Oris Divers Sixty-Five 40 Social Club Edition Xi'an (ref. 01 733 7707 4051 OSC-XAN-Set) is a contemporary reinterpretation of the legendary 1965 Oris Divers Watch. It features a 40mm stainless steel 316L case, unidirectional bezel, screw-down crown, and sapphire crystal with anti-reflective coating. The automatic Oris caliber 733 ND with manual winding beats at 28,800 vph and offers approximately 38 hours power reserve. Water resistance is rated to 300 meters. The 20mm lug width accommodates standard dive watch straps.

Frequently asked questions

What is the lug width of the Oris Divers 65 01 733 7707 4051 OSC-XAN-Set?

The lug width is 20mm. This measurement corresponds to the distance between the two attachment pins on the case. To verify it, measure horizontally the space between the lugs: it must be exactly 20mm to ensure compatibility and secure fit.

What is the best strap for the Oris Divers 65 01 733 7707 4051 OSC-XAN-Set?

It depends on your usage. For frequent diving: vulcanised butyl rubber, waterproof and washable. For refined durability: vegetable-tanned alligator or calf leather that develop patina. For tactical versatility: nylon NATO strap with steel deployante, changeable in seconds and compatible with any water condition.

How do you change the strap on this Oris model?

The Divers Sixty-Five features fixed lugs. To change the strap, remove the attachment pins (pin bars) using a dedicated tool or small screwdriver, then extract the old strap. Insert the new strap, aligning it with the lugs, and reinsert the pin bars, ensuring they are firmly seated. We recommend this operation in dry conditions to protect the movement.

Is an aftermarket strap compatible with the Oris Divers 65 01 733 7707 4051 OSC-XAN-Set?

Yes, provided the width is exactly 20mm. Milano Straps offers hand-crafted 20mm straps tested for compatibility with this line: alligator, natural leather, NATO and rubber, all with standard pin bars. Always verify that the strap is specified for 20mm before purchase.

How long does a leather strap last on this dive watch?

A leather strap with vegetable tanning, exposed to regular freshwater immersion, maintains structural integrity between 3 and 5 years. Saltwater exposure reduces this interval to 2-3 years if the strap is not systematically rinsed with fresh water after each immersion. Vulcanised rubber has superior longevity (5-10 years) if exposed to moderate UV. We recommend fresh water rinsing after every marine use.

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