Strap for Rolex Air-King 116900

The Rolex Air-King 116900 is fitted with a 20-millimetre lug width. This measurement is specific to this model and is essential to verify correctly before ordering an aftermarket strap. To measure it precisely, use a digital calliper positioned between the inner lug shoulders, perpendicular to the case.

The ideal strap depends on intended use. Dark brown alligator leather with directional grain creates a balance between sportiness and formality. For those preferring natural patina and aging, vegetable-tanned calf leather is excellent. A blue-grey NATO maintains aeronautical heritage, whilst an FKM rubber strap is perfect for robust daily wear.

Changing the strap requires specific tools: a spring bar tool (lever for the springs) and a stable, well-lit work surface. Position the spring inside the lug hole, gently push it downward to extract the pin, then slide off the old strap. Repeat with the new strap, ensuring the springs click into position. If unsure, entrust the task to an expert.

Yes, provided the strap is manufactured specifically for a 20 mm lug width. Always verify with the manufacturer that mounting tolerances are correct. Artisanal quality straps, such as those from Casati Milano, are made to measure to ensure perfect fit and durability over time.

Durability depends on leather type, exposure to atmospheric agents, and care received. An alligator or shell cordovan strap, with proper maintenance, lasts 3–5 years. Vegetable-tanned calf leather develops patina after 1–2 years and remains functional 4–6 years. FKM rubber is more durable (6–8 years) but does not age aesthetically like fine leathers.