Strap for Seamaster Aqua Terra 150M Quartz 30 Stainless Steel / MOP / Bracelet

The lug width of the 231.10.30.61.55.001 model is 20mm. This measurement should be verified manually with a digital caliper, measuring the distance between the lower and upper lug holes: a tolerance of ±0.5mm still allows comfortable strap installation. Precision measurement prevents forcing during strap changes.

For the Aqua Terra 231.10.30.61.55.001, we recommend straps in alligator or calf leather, materials that respect the elegant proportions of the case without visually weighing down the timepiece. Alligator with regular grain pairs perfectly with the brushed steel finish; soft calf offers daily versatility. Avoid rubber and NATO straps, which alter the aesthetic balance of the Omega design.

Remove the original strap by unclasping the deployant clasp from the lugs. Then extract the spring bars that attach the strap to the case using a spring bar tool: position the tool in the small lateral hole of the spring bar and push inward to release the internal spring. Insert the new strap by aligning the holes to the lugs, reposition the spring bars, and verify the attachment is complete before wearing the watch.

Yes, 20mm aftermarket straps are fully compatible with the 231.10.30.61.55.001 model. Milano Straps offers customizable selections in alligator, calf leather, and vegetable tanning, with adjustable length options and bespoke stitching. It is essential to verify that the chosen strap is certified 20mm lug width to ensure precise fit.

A quality leather strap (alligator, calf, or vegetable-tanned) typically lasts 3-5 years with daily use, depending on climate, sun exposure, and humidity frequency. The natural patina of the leather evolves over time, enriching the texture and color. To maximize longevity, avoid prolonged immersion, protect it from extended direct sunlight, and allow the material to breathe by letting any moisture dry. Casati Milano straps include an 18-month warranty against manufacturing defects.