Strap for Seamaster Aqua Terra 150M Co-Axial 30 Stainless Steel / Red Gold / Grey

The lug width of the 231.23.30.20.06.001 is 20mm. This width is calculated in proportion to the 30mm case diameter and maintains the correct visual balance between case and strap. The lugs are straight and provide excellent retention even with elegantly finished straps.

The choice depends on usage: cognac alligator or dark brown leather highlights the two-tone gold-steel tone in formal settings; vegetable-tanned calf offers a warm and sophisticated aesthetic balance; for marine environments, aged shell cordovan or vulcanized rubber ensure durability and style. On this compact model, every material develops its own character thanks to the contained proportions.

The strap is changed using a spring bar removal tool to compress the internal spring at the lug and extract the bar. Place the watch on a soft surface and work gently from underneath upward to avoid scratching the case. Insert the new strap by aligning the bar with its seat and verify proper attachment. If unsure, consult an expert.

Yes, any strap with a 20mm lug width is compatible with the 231.23.30.20.06.001. Verify that the strap has the same width, checking between the lugs and the watch body. At Milano Straps you will find artisanal straps specifically designed for this size, available in multiple materials and customizable.

Durability depends on usage and climate. A quality alligator or calf strap on a watch worn 4-5 times per week typically lasts 2-3 years before showing signs of wear at the buckle. Marine environments and sun exposure accelerate deterioration. A NATO or rubber strap ensures greater longevity. Milano Straps straps benefit from an 18-month warranty at the Casati Milano atelier.