Strap for Seamaster Planet Ocean 600M Co-Axial 42 Stainless Steel / Orange / Rubber

The lug width is exactly 20mm. This measurement is standard for the model and determines the compatibility of any aftermarket strap. To verify, use a digital caliper positioned between the inner spring bars (those that enter the case): the value must correspond to 20mm. A strap with a different lug width compromises the overall aesthetic and mechanical load distribution.

It depends on usage. For frequent diving, organic rubber or nato nylon are unbeatable: they dry quickly and resist saltwater without damage. For mixed use (diving and formal occasions), taupe grey alligator or vegetable-tanned calf maintain elegance without sacrificing practicality. Shell cordovan is the collector's choice who wants a natural patina that develops over time.

The procedure is straightforward. Locate the small-diameter spring bars that attach the strap to the case lugs (one on each side). Using a dedicated removal tool (spring bar tool) or a sturdy needle, gently compress the internal spring of the bar, slide the bar laterally and the strap will release. Insert the new strap by aligning the hole to the spring bar seat, push the bar in the opposite direction and you will hear a 'click' of engagement. Repeat on the second side. The operation takes two minutes and avoids the risk of scratching the lugs.

Yes, any strap with 20mm lug width is perfectly compatible. Quality artisanal 20mm straps (such as those from milanostraps.it) maintain the same Omega standard: identical spring bar seats, same width. The choice depends on your aesthetic and functional preference. It is advisable to avoid very thin straps (under 4mm thickness) as they may vibrate slightly during movement; professional straps are calibrated between 4.5 and 6mm to perfectly absorb the lugs.

Durability varies based on material and usage. A vegetable-tanned calf subjected to regular diving resists on average 2-3 years before requiring replacement: saltwater penetrates the fibers and weakens the structure. Alligator, being denser, lasts 3-4 years. Shell cordovan, thanks to its natural density and treatment, can exceed 5 years if not subjected to frequent diving. Rubber and nato remain practically unlimited (decades), but show visible wear in texture. A quality artisanal strap carries an 18-month warranty, a period sufficient to assess its actual performance.