Strap for Rolex Sea-Dweller 16660 Gloss

The Rolex Sea-Dweller ref. 16660 Gloss features a 20-millimetre lug width, measured from the upper terminal to the lower terminal of the case. This dimension is specific to the 16660 generation and is essential when selecting a compatible strap. To verify the measurement accurately, use a digital calliper on the inner edges of the case lugs, excluding the protruding portions.

The ideal strap depends on the intended use case. For formal occasions, we recommend dark brown alligator or rigid box calf leather; for marine environments or sporting activities, a ballistic nylon NATO strap or vulcanised rubber ensure practicality and water resistance. Vegetable-tanned leather offers an evolving patina whilst maintaining the case's sporting character.

Changing the strap requires a spring bar tool and a gentle touch. Position the watch on a soft surface, insert the tool into one of the lateral holes of the terminal, press the spring bar downward to release one end, then remove the old strap. Insert the new strap by engaging the spring bar into the attachment holes of the terminal until it clicks into place. If uncertain, consult a professional watchmaker.

Yes, the 16660 Gloss is fully compatible with quality 20mm aftermarket straps. Bespoke leather straps represent a significant upgrade over the original bracelet for many collectors. Ensure the strap features open terminals (not soldered) to facilitate mounting onto the case's spring bar attachments.

Leather strap longevity depends on material quality, tanning method and usage patterns. A quality alligator or calf with vegetable tanning lasts approximately 3–5 years with daily wear. With proper maintenance (protection from salt water, periodic conditioning), longevity increases substantially. Rubber or NATO straps typically last 5–7 years, whilst the natural ageing of leather is valued by collectors as authentic patina.