Rolex · Submariner

Strap for Submariner 16618 Black SuperLuminova

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
Reference16618 Black SuperLuminova
FamilySubmariner
MovementRolex caliber 3135 Hours, Minutes, Seconds | Chronometer
CaseYellow Gold

Recommended spring bar

Spring bars Rolex vintage 20mm × 2mm — drilled lugs

Technical match for lug width and diameter · lug 20 mm · Ø 2 mm · drilled lugs

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Straps for the Submariner 16618 Black SuperLuminova

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Submariner 16618 Black SuperLuminova, seen from the bench

The Rolex Submariner 16618 Black SuperLuminova, introduced in the 1980s, features a 40mm yellow gold case with a caliber 3135 automatic movement offering 48-hour power reserve. The watch includes a sapphire crystal, screw-down crown with Twinlock protection, and a black dial with SuperLuminova markers. Water-resistant to 300 meters, it represents pre-ceramic Rolex manufacturing with a 20mm lug width designed for precise strap compatibility.

Frequently asked questions

What is the exact lug width of the Rolex Submariner 16618 Black SuperLuminova?

The lug width of the Rolex Submariner 16618 Black SuperLuminova is precisely 20mm. This dimension represents the internal spacing between the two lugs where the strap attaches. To verify compatibility, measure accurately with a digital calliper: any strap designed for a 20mm lug width will fit your watch perfectly without play or excessive tension.

Which strap material is most suitable for the Rolex Submariner 16618 Black SuperLuminova?

For the Submariner 16618 Black SuperLuminova, alligator is our primary recommendation: the natural texture of the scutes creates an elegant contrast with the yellow gold and offers optimal flexibility. Shell cordovan represents the most exclusive option, with a patina that improves over time. A vegetable-tanned calf strap ensures comfort and breathability, whilst a silk jacquard NATO strap enhances the model's sporting heritage. Your choice depends on lifestyle and intended use.

How do you change the strap on a Rolex Submariner 16618 Black SuperLuminova?

Strap replacement requires a spring bar tool. Insert the flat tip of the tool into the narrow hole on one side of the spring, gently press inward to compress the spring, and remove the upper end of the spring. Repeat on the second lug. To fit the new strap, insert the lugs into their seats and press until the spring clicks into place. If you prefer professional assistance, consult a qualified watchmaker or contact Casati Milano's service.

Is a high-quality aftermarket strap compatible with the Rolex Submariner 16618 Black SuperLuminova?

Yes, any strap with a 20mm lug width is mechanically compatible. A high-quality artisanal strap, crafted by specialists such as Casati Milano, is not only perfectly compatible but significantly enhances the tactile and aesthetic experience of your watch. The quality of the leather and construction directly influences durability and comfort: a hand-crafted alligator or shell cordovan strap delivers superior performance compared to generic alternatives.

How long does a leather strap last on a Rolex Submariner 16618 Black SuperLuminova?

Leather strap longevity varies depending on material and usage. A high-quality artisanal alligator or shell cordovan strap, with ordinary maintenance, can last 3–5 years of daily wear. A vegetable-tanned calf strap typically lasts 2–3 years, as natural tanning makes leather more sensitive to moisture. Longevity is influenced by: frequency of use, humidity exposure, perspiration levels, and quality of construction. A synthetic NATO strap typically exceeds 5 years of durability. The 18-month manufacturing defect warranty offered by Casati Milano protects the initial construction quality.

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