Strap for Sea-Dweller 16600 Comex Service

The lug width of the Rolex Sea-Dweller 16600 Comex Service is precisely 20 millimetres. This dimension is determined by the distance between the two lugs of the case and represents the unvarying standard for this specific model. No variants exist: every compatible strap must strictly conform to the 20mm measurement to ensure perfect fit without lateral play.

For the 16600 Comex Service, alligator leather in vegetable tanning is the most traditional and versatile choice, owing to its regular grain which contrasts elegantly with the stainless steel case. Shell cordovan offers instead a unique patina that develops naturally over time. European calf leather provides chromaticity flexibility. For those who regularly use the Comex Service in water, FKM rubber (Viton) in anthracite grey represents the most technical and practical solution.

The 16600 Comex Service strap is changed by extracting the spring bars from the case lugs using a spring bar tool or fork-shaped device. The spring bars slide horizontally through the lugs and must be extracted gently to avoid scratching the case. Once the old strap is removed, the new strap is inserted by aligning the spring bars with the lug holes and pushing into position until an audible click confirms secure seating.

Yes. Casati Milano bespoke straps are certified compatible with the Rolex Sea-Dweller 16600 Comex Service, as they strictly conform to the 20mm lug width specification. Any high-quality artisanal strap with 20mm lug width is compatible. It is essential to always verify lug width: 19mm or 21mm straps will not fit the Comex Service properly.

A high-quality leather strap (alligator, shell cordovan, European calf) crafted with artisanal technique lasts approximately 4 to 8 years with regular use, depending on exposure to moisture and UV radiation. Vegetable-tanned leather ages gracefully, developing patina and character over time. Casati Milano straps are covered by an 18-month warranty on manufacturing defects. Storage in a dry location and periodic treatment with specific conditioners significantly extend the strap's lifespan.