Strap for Seamaster Aqua Terra 150M Master Chronometer 41 Sedna Gold / Silver / Bracelet

The lug width is 20mm. This dimension is specific to the 220.50.41.21.02.001 model and is determined by the geometry of the Omega case lugs. It is essential to measure it correctly by positioning a digital caliper perpendicularly between the two connection pins between the strap and case to ensure a perfect fit.

For Sedna Gold we recommend alligator in dark brown or burgundy tones, which elegantly contrast with the warmth of rose gold. Alternatively, vegetable-tanned calf in cognac or fulvous develops authentic patina over time, while for sports use shell cordovan offers robustness without compromising technical essence. The choice depends on intended use and the dial tone of your watch.

The Aqua Terra 220.50 uses a removable standard lug system. Obtain a spring bar tool and a magnifying glass. Gently press the small metal lever that holds the pin on both sides of the case, sliding the pin out of the lug. Repeat the process with the new 20mm strap, ensuring the pin is fully inserted and the strap is securely fastened.

Yes, provided the strap is specifically designed for 20mm lug width. Quality artisanal straps (in alligator, vegetable-tanned calf, or shell cordovan) offer superior customization compared to original Omega straps, allowing you to choose the leather, tone, thread color, and buckle type. Ensure the strap is certified for 20mm and that the pins are compatible with the Omega lug system.

A quality alligator strap lasts an average of 4-6 years with daily use, while vegetable-tanned calf can reach 5-8 years developing desirable patina. Shell cordovan is more durable and can last 7-10 years. Lifespan depends on usage (humid environments reduce longevity), maintenance (avoid stagnant water, dry after shower), and quality of finishes. A silicone rubber strap has potentially indefinite lifespan but loses original finish after 3-4 years.