Omega · Aqua Terra

Strap for Seamaster Aqua Terra 150M Master Chronometer Small Seconds 41 Sedna Gold / Blue / Rubber

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

Lug width

20mm

20 mm straps All Omega

Lug width20 mm

Case diameter41 mm

Reference220.52.41.21.03.002

FamilyAqua Terra

MovementOmega caliber 8917 hours, minutes, small seconds | date | chronometer, co-Axial escapement

Year2021

CaseSedna Gold

Recommended spring bar

Spring bars Omega 20mm — 1.8mm diameter

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

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All Omega spring barsOpen →

Straps for the Aqua Terra 220.52.41.21.03.002

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Aqua Terra 220.52.41.21.03.002, seen from the bench

The Omega Seamaster Aqua Terra 220.52.41.21.03.002 is a 41mm Sedna Gold watch representing contemporary evolution of Omega's nautical heritage. It features the proprietary Co-Axial caliber 8917 movement with column escapement, oscillating at 36,000 vibrations per second and certified Chronometer precision. The watch includes hours, minutes, small seconds at 6 o'clock, and date window at 3 o'clock, with a transparent sapphire caseback. The 20mm lug width is essential for strap compatibility and visual balance. Part of the Aqua Terra collection, it bridges sporty and elegant design.

Frequently asked questions

What is the exact lug width of the Omega Aqua Terra 220.52.41.21.03.002?

The lug width is 20mm. This measurement is verified by placing a ruler on the inner shoulders of the case lugs. It is the fundamental parameter for choosing a compatible strap: an 18mm or 22mm strap would not fit correctly.

What is the best strap for the Aqua Terra 220.52.41.21.03.002?

There is no universal choice. For the Sedna Gold, we recommend black or blue alligator in polished finish (formal elegance), vegetable-tanned calf in dark brown (develops natural patina over time), or burgundy shell cordovan (organic lustre). The choice depends on personal style and use: sporty or elegant.

How do you change the strap on the Omega Aqua Terra 220.52.41.21.03.002?

Use a spring bar removal tool (specialized tool) to gently push the lug terminals from below and release the spring bar. Never force with a knife. The new strap must have the same 20mm width. An Omega-certified watchmaker can perform the change without risk on the Sedna Gold case.

Is a quality aftermarket strap compatible with the 220.52.41.21.03.002?

Yes, provided the strap has exactly 20mm width and a compatible lug depth (approximately 5.5mm). Specialized brands like Casati Milano produce artisanal 20mm straps certified for this model. Always verify the measurement before purchase.

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

A premium alligator or calf strap lasts 3-5 years with daily use, up to 7-10 years when rotated with other straps. Duration depends on exposure to moisture, sweat and heat. Vegetable-tanned straps develop patina and resist longer. Frequent water exposure reduces durability by 30-40%.

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