Strap for Seamaster Aqua Terra 150M Master Chronometer 34 Sedna Gold / Diamond / Snow Sapphire / Alligator

The lug width of the 220.58.34.20.99.002 is 16mm. This non-standard measurement requires specific straps: the lug depth is 24mm. Always verify that any aftermarket strap is calibrated precisely to this dimension to avoid forcing.

Vegetable-tanned alligator (deep brown or cognac tones) is the most coherent choice: it dialogues beautifully with Sedna Gold and develops natural patina over time. Other refined alternatives include burgundy shell cordovan or white-cream vegetable-tanned calf leather for summer occasions.

Omega uses straight pins on this model. Secure the case with a precision tool (spring bar tool), locating the pins beneath the original strap lugs. Gently compress the pin and slide off the old strap, then insert the new one by perfectly aligning the pin in the lug. Verify symmetric protrusion.

Yes, provided the lug width is exactly 16mm and the depth is 24mm. High-quality watchmaking straps (alligator, cordovan, vegetable-tanned calf) are compatible and allow superior personalization compared to standard Omega options, without compromising value or warranty if the work is performed correctly.

A quality watchmaking leather strap lasts 3-5 years with moderate use, gradually stretching during the first year. Shell cordovan and vegetable-tanned alligator develop patina and age beautifully. Original Omega rubber maintains hydrophobic performance for 4-6 years. Seasonal rotation extends overall longevity.