Strap for Seamaster Planet Ocean 600M Co-Axial 42 Mécanique 20 Sapphires

The correct lug width is 20mm. This is the width between the internal slots of the case. To verify it without error, measure the exact distance between the internal shoulders of the pins where your current strap sits. Precise measurement is critical: a 19mm strap would be too loose, a 21mm strap would not fit into the slots.

Dark brown or black alligator is the most elegant choice, with natural grain that respects the case geometry. Red or burgundy shell cordovan introduces warmth while maintaining chromatic harmony. Vegetable-tanned calf in hazelnut tones offers lightness. Rubber remains appropriate only for actual diving, never for daily wear, as the black elastomer does not dialogue with the white gold case.

The change requires precision. Position the watch on a stable surface, locate the two protruding pins at the lug slots (one on each side). Using a strap removal tool or a replacement pin, gently push from one side of the first pin until it comes out completely. Repeat on the other side. Insert the new strap into the slots, then reinsert the pins. If you have any doubts, contacting an Omega authorized service center remains the safest choice.

Yes, provided it is made with an actual <a href="/pages/termine-glossario/misura-ansa">20mm lug width</a>. Quality artisanal straps—in alligator, cordovan, or calf—integrate perfectly. Verify that the manufacturer explicitly states 20mm, and that the strap is sewn with watchmaking quality (at least waxed thread with double pass). A low-cost strap might rub against the case or wear prematurely.

A quality artisanal alligator or cordovan strap, with <a href="/pages/termine-glossario/concia-vegetale">vegetable tanning</a> and double stitching, lasts 3–5 years of daily wear before requiring replacement. Durability depends on ambient humidity, frequency of wear, and care (drying after bathing, avoiding chronic sweat). Shell cordovan evolves better over time, developing an ennobling patina. Alligator remains stable in color. With proper maintenance—periodic cleaning and conditioning—life can extend to 6 years.