Strap for Sea-Dweller 16600 Comex Mark 2

The lug width of the Sea-Dweller 16600 Comex MK2 is 20mm. This measurement is taken by placing a digital calliper between the internal lugs of the case. Verifying this dimension before ordering an aftermarket strap is essential, as measurement errors compromise mechanical fit and overall aesthetics. Any variation (19mm or 21mm) alters the structural integrity of the lugs and reduces the lifespan of the case.

There is no single 'best' choice; rather, solutions must be matched to specific contexts. Alligator with vegetable tanning offers aesthetic refinement and develops a natural patina over time. Shell cordovan guarantees structural rigidity and deep lustre. Natural rubber is unmatched for direct water exposure and aquatic sports. French calf with vintage finishing permits soft chromatic transitions. Your choice should align with predominant usage environments and personal philosophy regarding maintenance and wear.

Strap replacement requires a specialised tool: a spring bar removal tool to detach the spring bars connecting the strap to the case lugs. Position the watch with the wrist facing upward, locate the hole on the lug shoulder, gently insert the tool to lift the elastic pin, and carefully remove the strap. Repeat on the opposite side. Install the new strap by reversing the process. If you lack experience, we recommend entrusting this operation to an official service centre to avoid case scratching.

Yes, any strap with 20mm lug width is theoretically compatible. However, we recommend selecting straps from artisanal suppliers who understand this model's specific requirements. Casati Milano and MilanoStraps offer customisable straps for 20mm lugs, with direct atelier consultation available to verify aesthetic proportions and build quality before purchase. Avoid unverified generic straps.

Longevity depends on material, tanning method, and environmental exposure. Alligator with vegetable tanning, worn daily in dry conditions, typically lasts 4-6 years whilst maintaining good aesthetics. Shell cordovan, being more durable, may last 6-8 years. Frequent exposure to saltwater, direct heat, and constant humidity reduce this estimate to 2-3 years. Technical rubber exhibits a lifespan of 5-7 years. Regular maintenance—cleaning with a damp cloth and periodic conditioning with specialist creams—significantly extends strap life. Casati Milano offers an 18-month warranty against manufacturing defects.