Technical Archive

Oris
Divers 65 01 733 7707 4035-07 5 20 29FC— lug 20mm

Oris Divers 65 01 733 7707 4035-07 5 20 29FC: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Divers Sixty-Five 40 Stainless Steel / Blue / NATO

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Oris 01 733 7707 4035-07 5 20 29FC
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

01 733 7707 4035-07 5 20 29FC

Movement

Oris caliber Oris 733 Hours, Minutes, Seconds | Date

The Heritage

The Oris Divers 65 01 733 7707 4035-07 5 20 29FC is an authentic interpretation of 1960s diving watch philosophy. The 40 mm stainless steel case features a screw-down caseback, unidirectional bezel, and anti-reflective sapphire crystal. Powered by the Oris 733 automatic Swiss movement with 42-hour power reserve, it displays hours, minutes, seconds, and date at 3 o'clock. Water resistant to 300 metres, the watch requires a 20 mm strap width and accommodates straps up to 4.5–5 mm thick.

FAQ

What is the lug width of the Oris Divers 65 01 733 7707 4035-07 5 20 29FC?

The lug width (strap width) of the Oris Divers 65 01 733 7707 4035-07 5 20 29FC is 20 mm. This measurement refers to the distance between the spring bar pins, measured from inside edge to inside edge. It is essential to verify this dimension before purchasing an aftermarket strap to ensure perfect compatibility and to avoid excessive play or mechanical conflicts with the case lugs.

What type of strap is recommended for the Divers 65 01 733 7707 4035-07 5 20 29FC?

The ideal strap depends on intended use: for daily elegance, shell cordovan or alligator with vegetable tanning offer natural patina and durability; for military-sport styling, a thick cotton NATO restores authentic heritage; for actual diving use, FKM rubber delivers superior grip and water resistance. The 40 mm stainless steel case pairs excellently with warm-toned straps such as cognac, tobacco, and dark burgundy.

How do I change the strap on the Oris Divers 65 01 733 7707 4035-07 5 20 29FC?

To change the strap, you will need a spring bar tool: insert the tip into the lateral opening of the spring bar pin, compress gently to release the spring tension, then extract the pin outward. Repeat on the opposite side. When installing the new 20 mm strap, ensure that the pins click firmly into the lugs, creating a secure fit without lateral movement. Avoid forcing: the pins should click smoothly into place.

Which aftermarket strap is compatible with the Divers 65 01 733 7707 4035-07 5 20 29FC?

Any strap with a 20 mm lug width is compatible. Milanostraps.it offers a curated selection of artisanal straps in this size: premium leather in multiple types (shell cordovan, alligator, calf), NATO in cotton and linen, and FKM rubber. Your choice should account for maximum strap thickness (up to approximately 5 mm) to avoid compromising the visual harmony between case and wrist. All available straps have been tested for mechanical compatibility with the Divers.

How long does a leather strap last on the Oris Divers 65 01 733 7707 4035-07 5 20 29FC?

Longevity depends on tanning method and usage: shell cordovan with vegetable tanning can last 5–8 years with regular maintenance (conditioning every 6–12 months); premium calf leather 3–5 years; alligator 4–7 years. Continuous sun and water exposure shortens lifespan. The natural patina that develops in the first months is a sign of quality and authenticity, not degradation. When the strap eventually wears out, you can always replace it whilst keeping the same watch: the Divers 65 is engineered for generations of straps.