Omega Seamaster Aqua Terra 150M Master Co-Axial Chronometer Ladies 38.5mm Stainless Steel Red Gold White Mother of Pearl Dial Diamond Set Index Steel Red Gold Bracelet 231.20.39.21.55.003 - BRAND NEW

The Omega Seamaster Aqua Terra 150M is one of the most versatile and enduring collections in modern Swiss watchmaking, bridging the gap between serious water-resistant sports watch and refined dress timepiece. Introduced in the early 2000s, the Aqua Terra line drew its name from both the sea and the land, reflecting Omega's vision of a watch equally at home beneath the surface as at a boardroom table or a gala evening. Reference 231.20.39.21.55.003 represents that philosophy at its most polished, marrying the Seamaster's maritime heritage with precious metals, natural gemstones, and Omega's most advanced movement technology.

At 38.5mm in diameter, the case is sized to wear beautifully on a wide range of wrists, offering genuine presence without overwhelming a smaller hand. The case itself is crafted in stainless steel—robust, corrosion-resistant, and polished to Omega's exacting standard—while red gold accents on the bezel and bracelet introduce warmth and a two-tone luxuriousness that elevates the design far beyond an everyday sports watch. The interplay of brushed and polished surfaces across the steel-and-red-gold bracelet is a hallmark of Omega's finishing quality and gives the piece exceptional wrist presence in natural light.

The dial is the undisputed showpiece of this reference. White mother-of-pearl is a material prized for its organic luminosity: each dial is unique, shifting through subtle iridescent hues as the angle of light changes. Against this living canvas, the indexes are diamond-set, adding scintillating points of light that complement the red gold hour markers and hands. The result is a dial that is simultaneously sporty—with its clear legibility and Seamaster lineage—and deeply luxurious, making ref. 231.20.39.21.55.003 a compelling choice for a woman who refuses to separate performance from beauty.

Powering the watch is Omega's Master Co-Axial Chronometer movement, the culmination of decades of development around George Daniels' co-axial escapement and Omega's own innovations in anti-magnetic protection and certified precision. A Master Chronometer designation means the movement has passed METAS certification, meeting stringent standards for accuracy, magnetic resistance, and water resistance that go beyond the traditional COSC benchmark. Buyers can therefore wear this watch with total confidence in its long-term reliability and reduced need for servicing compared with traditional lever-escapement movements.

Reference 231.20.39.21.55.003 is offered at Bizak & Co. in brand-new condition, meaning it arrives as it left the Omega manufacture—pristine, unregistered, and accompanied by its original packaging. Buying new also means full access to Omega's international warranty, giving complete peace of mind. Whether you are searching for a sophisticated everyday companion, a milestone gift, or a long-term heirloom piece, this Aqua Terra ticks every box. Contact Bizak & Co. today or purchase directly at bizakandco.com to secure this reference at our best price.