Rolex
Submariner 16618 Black SuperLuminova— lug 20mm

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.

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.

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.

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.

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.