Omega · Aqua Terra

Strap for Seamaster Aqua Terra 150M Co-Axial 44 Chronograph Co-Axial Stainless Steel / White

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter44 mm
Reference231.13.44.50.04.001 (aka: 23113445004001)
FamilyAqua Terra
MovementOmega caliber 3313 Hours, Minutes, Small Seconds | Date | Chronograph, Column wheel | Co-Axial Escapement
CaseStainless Steel

Recommended spring bar

Spring bars Omega 20mm — 1.8mm diameter

Technical match for lug width and diameter · lug 20 mm · Ø 1.8 mm

All Omega spring barsOpen →

Straps for the Aqua Terra 231.13.44.50.04.001 (aka: 23113445004001)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Aqua Terra 231.13.44.50.04.001 (aka: 23113445004001), seen from the bench

The Omega Seamaster Aqua Terra 231.13.44.50.04.001 is a 44mm stainless steel chronograph combining sport and formal aesthetics. It features a Co-Axial escapement and Omega caliber 3313 movement, offering reduced friction and extended service intervals. Water-resistant to 150 meters, the watch has a guilloché dial with teak texture and a 20mm lug width, requiring specifically sized straps for proper fit and function.

Frequently asked questions

What lug width does the Omega Aqua Terra 231.13.44.50.04.001 have?

The Omega Aqua Terra 231.13.44.50.04.001 has a lug width of 20mm, measured between the case lug pins. This specification requires compatible straps of exactly 20mm width for proper and secure fit.

What is the best strap material for this Omega model?

For the 231.13.44.50.04.001, authentic alligator is the ideal choice: its regular scales mirror the teak guilloché texture of the dial, creating aesthetic coherence. Vegetable-tanned calf offers an elegant alternative and develops natural patina over time. For intense marine environments, shell cordovan guarantees superior moisture resistance.

How do I change the strap on my Omega Aqua Terra 231.13.44.50.04.001?

Strap replacement requires a spring bar tool to remove the elastic pins from the case lugs. Gently insert the flat blade under the pin, applying outward pressure until release. Position the new strap by aligning one hole with the lug pin first, then press the other hole into position until the safety click. Milano Straps offers detailed guides and telephone support.

Can I use aftermarket straps compatible with the 231.13.44.50.04.001?

Yes, but with caution. Any aftermarket strap must strictly respect the 20mm lug width and manufacturing tolerances. Lower quality straps can cause friction on the pins and prematurely wear the holes. Milano Straps provides 20mm straps tested and guaranteed for compatibility with this Omega model.

How long does a leather strap last on a 44mm Omega Aqua Terra?

Durability varies based on material and use. High-quality alligator and vegetable-tanned calf last 3-5 years with moderate daily use. Shell cordovan can exceed 7 years thanks to its structural resistance. Factors such as humidity, sun exposure, and frequency of use affect longevity. Milano Straps offers an 18-month warranty on custom straps.

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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only