Omega · Aqua Terra
Strap for Seamaster Aqua Terra 150M Co-Axial 43 GMT Stainless Steel / Red Gold / Grey / Glauser
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Aqua Terra 231.23.43.22.06.003 (aka: 23123432206003)
Selected for the 20 mm lug width · workshop selection
Black Alligator Strap with Light Blue Edges€149
Red Alligator Strap Water Resistant€195
Green Rubberized Alligator Strap with Ecru Tribal Stitching€149
Hammered Calfskin Strap Light Blue€98
Vintage Olive Green Calf Leather Watch Strap€80
The Aqua Terra 231.23.43.22.06.003 (aka: 23123432206003), seen from the bench
Frequently asked questions
What lug width does the Omega Aqua Terra 231.23.43.22.06.003 have?
The Omega Aqua Terra 231.23.43.22.06.003 features a lug width of exactly 20mm. This width is specific to this reference and requires straps designed specifically for this dimension. Correct measurement is performed using a caliper positioned perpendicularly to the lugs.
Which strap is best suited for the Omega Aqua Terra 231.23.43.22.06.003?
For the intense blue dial of the 231.23.43.22.06.003, a navy blue or pitch black alligator strap represents the most elegant choice. Black calf with vertical grain offers sophisticated texture with natural patina over time. For sporty pairings, a tactical NATO in Cordura or a structured rubber strap maintain nautical functionality.
How do you change the strap on the Omega Aqua Terra 231.23.43.22.06.003?
The strap is removed by inserting a flattened tool (spring bar tool) under the spring bar located inside the lugs. Apply gentle outward pressure to release the pin, then extract the old strap. Repeat the operation from the other side. Installation of the new 20mm strap is accomplished by aligning the holes and gently pushing until the spring bar clicks into position.
Are aftermarket straps compatible with the Omega Aqua Terra 231.23.43.22.06.003?
Yes, provided they are made with a 20mm lug width. Quality aftermarket straps allow superior customization compared to the original Omega strap: choice of leathers (alligator, calf, shell cordovan), personalized stitching thread, adapted lengths, and selected deployant. Milano Straps offers 20mm straps with an 18-month warranty when crafted at the Casati Milano atelier.
How long does a leather strap last on the Omega Aqua Terra 231.23.43.22.06.003?
Durability depends on material and usage. Quality alligator, worn daily with care (avoiding prolonged water exposure), lasts 3-5 years. Calf with vertical grain develops fascinating patina and withstands 2-4 years. Shell cordovan, with proper maintenance, exceeds 6 years. Structured rubber has unlimited durability but may lose grip and texture over time. Exposure to chlorine, salt water, and humidity significantly reduces longevity.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only

