Strap for Sea-Dweller 16660 Comex

The lug width of the Rolex Sea-Dweller 16660 Comex is 20mm, measured internally between the two lugs at the strap attachment point. This dimension is shared with most vintage Rolex sport models and allows the use of a wide range of aftermarket straps with a straight 20mm end.

The ideal choice depends on intended use and aesthetic preference. For an authentic vintage look, a shell cordovan strap in tobacco or an alligator strap in dark grey enhances the tool-watch character of the 16660 Comex. For daily or active wear, a nylon NATO or a technical rubber strap in 20mm offers practical durability and moisture resistance.

To replace the strap on the 16660 Comex, you will need a spring bar tool with a fine tip. Rolex lugs accept standard spring bars with a 1.8mm diameter pin. Insert the tip into the lug notch, compress the spring bar, and slide the strap outward. The operation takes approximately two minutes and does not require professional tools.

Yes. Any strap with a straight 20mm end is compatible with the Rolex Sea-Dweller 16660 Comex. Since Rolex lugs have a slightly curved profile, straps with curved or semi-curved ends provide a cleaner aesthetic fit. Milanostraps.it offers a curated selection of handcrafted 20mm straps specifically tested on Rolex sport references.

Longevity depends on leather type and frequency of use. A quality alligator strap with saddle stitching and a calf lining can last three to five years with regular wear. Shell cordovan, owing to its densely compacted fibres, tends to last longer and develops an improving patina over time. Casati Milano straps come with an 18-month warranty against manufacturing defects.