Strap for Seamaster Planet Ocean 600M Co-Axial 45.5 Master Chronometer Chronograph Stainless Steel / Black / Bracelet

The lug width is exactly 22mm, corresponding to the distance between the fixing pins on the 45.50mm case. This specification is calibrated by Omega to maintain correct visual proportions and ensure wearing comfort. To verify it, measure with a caliper the distance between the two pins after removing the original strap.

It depends on usage. For frequent diving and authentic underwater use, a premium regenerated NATO resists salt water without degradation. For primarily urban settings with occasional diving, vegetable-tanned calf leather or shell cordovan offer elegance and natural patina over time. Alligator is the prestige choice, but less suitable for prolonged marine use.

Remove the original strap by extracting the pins from the lugs using a dedicated tool or a thin flat blade. Insert the pins into the new 22mm strap ensuring they are aligned perpendicularly to the case. The procedure requires care to avoid damaging the internal spring bars: if inexperienced, consult a professional.

All straps constructed with 22mm lug width are compatible. Milano Straps offers a complete collection of 22mm straps in vegetable-tanned leather, shell cordovan, NATO and rubber, customizable in sizes, initials and thread color, specifically selected for aesthetics and durability on diving instruments like your Omega.

Durability depends on material and usage. Vegetable-tanned calf leather, if exposed to frequent diving, degrades in 2-3 years because salt water compromises the fibers. Shell cordovan resists 4-5 years even with occasional diving. Premium regenerated NATO lasts 5-7 years under all conditions. Milano Straps vegetable-tanned leather straps are guaranteed for 18 months even with underwater use, with patina developing progressively.