Strap for Seamaster Aqua Terra 150M Co-Axial 34 Stainless Steel / Black

The lug width of the Omega Aqua Terra 231.13.34.20.01.001 is exactly 20 millimetres. This measurement must be taken with precision using a digital calliper positioned on the inner shoulders of the lugs, where the strap actually rests. 22mm straps will not pass through the lugs, while 18mm straps will move freely inside.

The Omega Aqua Terra 231.13.34.20.01.001 pairs naturally with straps in cognac or dark brown alligator, cognac calf leather, shell cordovan, and technical materials such as rubber or fabric in navy blue or black tones. The choice depends on use: alligator and calf for formal contexts, rubber and fabric for sports or maritime settings. The compact 34mm diameter requires straps that are not too substantial (maximum thickness 4.5mm) to maintain proper proportions.

First measure the lugs with a digital calliper to confirm the 20mm width. Remove the original strap using specific tools (spring bar tools or extractors) without damaging the case. Insert the new strap by aligning the holes with the lug pins. If you do not have the tools, consult a professional watchmaker or the Casati Milano atelier for a safe replacement.

Yes, the 231.13.34.20.01.001 is fully compatible with quality aftermarket straps made for the 20mm lug width. Milano Straps offers customisable straps in leather, rubber and fabric, available in various finishes and colours. For optimal results, verify that the strap is designed for mid-size watches (34mm) and that the thickness does not exceed 4.5mm to maintain the original proportions.

The lifespan of a leather strap depends on the material, frequency of use and storage conditions. An alligator or shell cordovan strap, used moderately and kept dry, lasts 3-5 years; common calf leather 2-3 years. Milano Straps offers an 18-month warranty on all custom straps and recommends rotating multiple straps throughout the seasons to extend the life of each one. Vulcanised rubber straps have a longer lifespan (7-10 years) but require regular cleaning.