Omega · Aqua Terra

Strap for Seamaster Aqua Terra 150M Master Co-Axial 34 Stainless Steel / Pink MOP / Bracelet

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

Lug width20 mm
Case diameter34 mm
Reference231.10.34.20.57.003 (aka: 23110342057003)
FamilyAqua Terra
MovementOmega caliber 8520 Hours, Minutes, Seconds | Date | Chronometer, 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 231.10.34.20.57.003 (aka: 23110342057003)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Aqua Terra 231.10.34.20.57.003 (aka: 23110342057003), seen from the bench

The Omega Aqua Terra reference 231.10.34.20.57.003 is powered by the automatic caliber 8520 with Co-Axial escapement and chronometer certification. The movement offers hours, minutes, central seconds and date indication. The construction integrates Omega's Co-Axial technology to reduce friction in the movement's gears.

Frequently asked questions

What is the lug width of the Omega Aqua Terra 231.10.34.20.57.003?

The Omega Aqua Terra 231.10.34.20.57.003 has a lug width of exactly 20mm, measured between the centers of the spring bar attachment points. It is essential to verify this measurement with a digital caliper to ensure perfect compatibility with aftermarket straps.

What is the best strap for the Omega Aqua Terra 34mm?

For the 231.10.34.20.57.003 we recommend vegetable-tanned alligator (formal), shell cordovan (elegant-sporty), or full-grain calf leather with steel deployant clasp (versatile daily wear). The choice depends on primary use: formal occasions favor exotic leather, sport-elegant settings prefer textured leather or NATO straps.

How to change the strap on an Omega Aqua Terra without damage?

Use a professional spring bar removal tool. Position the watch on a soft rubber pad, locate the small lateral holes in the lugs, insert the tool at a 45° angle, extract the spring bar with gentle movements. Avoid excessive torque that could damage the lug recesses. For beginners, Casati Milano offers personalized strap replacement by appointment.

Is a 20mm aftermarket strap truly compatible with the 231.10.34.20.57.003?

Yes, provided the measurement is verified precisely. Straps and certified 20mm spring bars install without issues, but tolerances of ±0.3mm can cause friction. We recommend straps from suppliers specializing in luxury watches, with stainless steel spring bars and properly calibrated attachment points. Milano Straps provides pre-verified straps for this reference.

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

A quality leather strap (alligator, shell cordovan, full-grain calf) lasts 3-5 years with moderate daily use, up to 7-8 years if worn occasionally. Exposure to direct sunlight, frequent water contact, and perspiration accelerate aging. Rubber straps typically last 4-6 years before replacement is needed. Regular maintenance (air-drying after showering, annual conditioning) extends strap lifespan by 20-30%.

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