Skip to product information
Omega Seamaster Aqua Terra 150M Master Co-Axial Chronometer 34mm Stainless Steel Sedna Gold Diamond Bezel White Mother of Pearl Dial Diamond Set Index Alligator Leather Strap 231.28.34.20.55.003 - BRAND NEW

Omega Seamaster Aqua Terra 150M Master Co-Axial Chronometer 34mm Stainless Steel Sedna Gold Diamond Bezel White Mother of Pearl Dial Diamond Set Index Alligator Leather Strap 231.28.34.20.55.003 - BRAND NEW Omega Seamaster Aqua Terra 150M Master Co-Axial…

Reference 231.28.34.20.55.003

Full watch configuration

Omega Seamaster Aqua Terra 150M Master Co-Axial Chronometer 34mm Stainless Steel Sedna Gold Diamond Bezel White Mother of Pearl Dial Diamond Set Index Alligator Leather Strap 231.28.34.20.55.003 - BRAND NEW

$11,799.00
Requested condition
Brand New

By Omega

Sourced to order. We confirm the watch, condition and final price before purchase. Reference images shown.

Eligible watches: 90-day returns for store credit only. Brand-new watches and other exclusions are final sale. Return terms.

Omega Seamaster Aqua Terra 150M Master Co-Axial Chronometer 34mm Stainless Steel Sedna Gold Diamond Bezel White Mother of Pearl Dial Diamond Set Index Alligator Leather Strap 231.28.34.20.55.003 - BRAND NEW

Omega Seamaster Aqua Terra 150M Master Co-Axial Chronometer 34mm Stainless Steel Sedna Gold Diamond Bezel White Mother of Pearl Dial Diamond Set Index Alligator Leather Strap 231.28.34.20.55.003 - BRAND NEW

Current Catalogue Asking Price:

Your Offer

$

Submit your offer for review. Availability and the final price require confirmation.

Preferred Contact Method
I have a trade-in / add a note

Reserve with $200

Omega Seamaster Aqua Terra 150M Master Co-Axial Chronometer 34mm Stainless Steel Sedna Gold Diamond Bezel White Mother of Pearl Dial Diamond Set Index Alligator Leather Strap 231.28.34.20.55.003 - BRAND NEW

Catalogue watch price: $11,799.00 USD

Your $200 deposit is applied to the watch’s purchase price. It is refundable only if Bizak & Co. cannot fulfill your order.

Estimated remaining balance: $. Pay by bank wire or cryptocurrency after we confirm your watch and final invoice. Shipping and applicable taxes are additional.

Shipping details · Return terms

Watch shipping is paid with the final balance: $100 for U.S. overnight delivery or $500 internationally. Applicable taxes and import charges are additional.

After payment, our team starts the tailored search and contacts you to confirm the specific watch and final invoice. A deposit does not guarantee a unit, the listed price or a delivery date.

Need installments? Check eligibility before paying a deposit.

Speak with a Bizak & Co. specialist about this piece

|Call or Text

The Omega Seamaster Aqua Terra 150M reference 231.28.34.20.55.003 is a brand-new 34mm luxury sports watch combining a stainless steel case with Sedna gold accents, a diamond-set bezel, and a luminous white mother-of-pearl dial adorned with diamond-set indexes. Powered by Omega's acclaimed Master Co-Axial Chronometer movement, it represents the pinnacle of Swiss watchmaking precision and elegance. The watch is completed by a supple alligator leather strap that underscores its refined, feminine character.

What distinguishes this reference is the rare pairing of Omega's proprietary rose-gold alloy Sedna gold with diamond craftsmanship across both the bezel and dial indexes, elevating the Aqua Terra's iconic nautical design into genuine fine-watch territory. Available brand new at Bizak & Co., this is an exceptional opportunity to acquire one of Omega's most desirable ladies' references — contact us today to purchase or learn more.

Compare it across every Seamaster Aqua Terra 150M reference we carry, or browse the full Omega collection at Bizak & Co.

Buy this Seamaster Aqua Terra 150M, trade in your current watch, or sell us yours. Contact Bizak & Co. to make an offer or request a fair-market valuation.

Not the exact one you’re looking for?

Source your dream watch

Learn More

The Omega Seamaster Aqua Terra 150M is one of the most versatile and celebrated collections in the Seamaster family, conceived to bridge the worlds of sport, sea, and sophisticated everyday wear. Drawing inspiration from the teak decks of ocean-going yachts — a nod reflected in the characteristic horizontal lines that have historically graced its dials — the Aqua Terra has earned a devoted following among collectors and enthusiasts who demand both performance and elegance. Reference 231.28.34.20.55.003 represents the collection at its most luxurious, uniting technical mastery with genuinely precious materials.

At 34mm, the stainless steel case of this reference is proportioned for a refined, feminine fit, sitting gracefully on the wrist without sacrificing the Aqua Terra's inherent presence. The case is enriched by the integration of Omega's proprietary Sedna gold — a carefully developed rose-gold alloy prized for its exceptional color stability and resistance to fading over time — ensuring that the warm tonal contrast with the polished steel remains as striking decades from now as it is today. Every curve and lug speaks to Omega's decades of case-finishing expertise.

The dial is a study in restrained opulence. A white mother-of-pearl surface brings natural, ever-shifting luminescence to the face of the watch, with each example displaying subtly unique patterns inherent to the material. Diamond-set indexes replace the standard applied markers, scattering light at every angle and reinforcing the horological jewelry credentials of this reference. Paired with the Sedna gold diamond-set bezel that frames the dial, the overall effect is cohesive, brilliant, and unmistakably purposeful rather than merely decorative.

Beneath the dial, Omega's Master Co-Axial Chronometer movement delivers the brand's hallmark standard of precision and reliability. The Co-Axial escapement — Omega's proprietary innovation — significantly reduces friction within the gear train, extending service intervals and contributing to long-term accuracy in a way traditional lever escapements cannot match. Chronometer certification guarantees performance to the exacting standards of the Contrôle Officiel Suisse des Chronomètres (COSC), providing buyers with documented assurance of the movement's quality.

The alligator leather strap completes the watch with a material that has long been synonymous with haute horology and luxury dress accessories. Its supple texture and natural grain pattern complement the mother-of-pearl dial beautifully, ensuring the watch transitions effortlessly from daytime elegance to evening occasions. This is a timepiece designed to be worn, admired, and passed down.

Whether you are a seasoned Omega collector or acquiring your first fine Swiss watch, this Aqua Terra represents extraordinary value at the intersection of craftsmanship, heritage, and everyday wearability. Contact Bizak & Co. today or shop online at bizakandco.com to make this exceptional timepiece yours.

Technical Details
Reference
231.28.34.20.55.003
Model
Seamaster Aqua Terra 150M
Movement
Automatic
Case material
Rose Gold
Bracelet material
Leather
Dial
White mother-of-pearl with diamond-set indexes
Case size
34mm
Requested condition
Brand New
FAQ

1. What makes the Omega Seamaster Aqua Terra 231.28.34.20.55.003 special?
This reference stands out for its rare combination of Omega's proprietary Sedna gold diamond-set bezel, a white mother-of-pearl dial with diamond-set indexes, and Master Co-Axial Chronometer movement — all in a refined 34mm case. It is one of the most jewel-forward expressions of the Aqua Terra collection, making it equally at home as a dress watch and a precision sport timepiece. The use of Sedna gold, known for its lasting color stability, adds long-term value to the aesthetic.

2. What movement powers the Omega Seamaster Aqua Terra 150M 231.28.34.20.55.003?
This watch is powered by an Omega Master Co-Axial Chronometer movement, which incorporates Omega's proprietary Co-Axial escapement to reduce friction and extend service intervals compared to traditional movements. It carries Chronometer certification from COSC, guaranteeing a high standard of precision. This movement technology is a key reason Omega's modern references are so highly regarded by collectors and enthusiasts.

3. What is the case size of the Omega Aqua Terra 231.28.34.20.55.003?
The case measures 34mm in diameter, making it an ideal size for smaller wrists or those who prefer a more refined, classic proportion. The case is crafted from stainless steel with Sedna gold accents, delivering both durability and a luxurious two-tone aesthetic. At this size, the watch wears elegantly and is well suited to both everyday use and formal occasions.

4. Is the Omega Seamaster Aqua Terra 34mm suitable for everyday wear?
Yes — the Aqua Terra 150M is designed for versatility, pairing the Seamaster's heritage of water resistance and robust construction with a refined aesthetic that suits professional and social settings alike. The stainless steel case provides excellent durability, while the alligator leather strap elevates the watch for smarter occasions. It is an ideal everyday companion for someone who wants precision, elegance, and wearability in one piece.

5. What is the dial and bezel material on reference 231.28.34.20.55.003?
The dial features white mother-of-pearl — a natural material prized for its iridescent, shifting appearance — set with diamond indexes that add brilliance and fine-watch character. The bezel is crafted in Omega's Sedna gold and is also set with diamonds, creating a cohesive frame of warmth and sparkle around the dial. Together, these elements give this Aqua Terra a distinctly jewelry-watch sensibility without compromising its sporting Seamaster DNA.

6. How can I buy the Omega Seamaster Aqua Terra 231.28.34.20.55.003 from Bizak & Co.?
This reference is available brand new at Bizak & Co., and you can purchase it directly through our website at bizakandco.com or by contacting our team for personalized assistance. Reserve this watch online with a $200 deposit. We invite you to reach out to our specialists who can answer any further questions and guide you through the purchase process.

Certified Authenticity

Every watch is authenticated before delivery.

Real Family Business

You're buying from genuine people, 30 years in business.

Bizak & Co. Warranty

Every watch is checked by us before shipping.

5 Years Warranty

Our five-year Bizak & Co. warranty covers manufacturing defects affecting mechanical operation under normal use, starting on delivery. It is separate from any remaining manufacturer warranty.

Exclusions include accidental damage, misuse, water damage, cosmetic damage, normal wear, loss and theft. Coverage and service availability for vintage or modified watches are confirmed in writing before purchase.

Read the full warranty terms and service instructions. 

90-Day Returns for Store Credit

Eligible watches may be returned within 90 days for store credit. Brand-new watches and other exclusions are final sale.

Read eligibility, condition requirements, and exclusions.

Insured delivery

Insured shipping

U.S. overnight shipping is $100; international shipping is $500. Dispatch takes 2–3 business days after your wire clears. International transit times vary. Shipping details.

You might also like...

Customer Reviews

Read our reviews on Trustpilot

  • Great family business

    Great family business. They went out of their way to make my purchase go smoothly, they definitely earned my watch business!

    Paul

    Read on Trustpilot ↗
  • Good seller

    Good seller. Honest family

    Mateusz

    Read on Trustpilot ↗
  • Honest family company

    Honest family company. I’ve done business many times!

    Mollie

    Read on Trustpilot ↗
  • Trusted Seller

    Trusted Seller, Definitely recommend for all watches purchase!

    Consumer

    Read on Trustpilot ↗
  • Trusted and honest seller

    Trusted and honest seller. Deal with confidence.

    Jean Dib

    Read on Trustpilot ↗