Introduced in 2003 to bridge the gap between Omega’s dedicated dive instruments and formal wear, the Seamaster Aqua Terra reference 2503.33.00 utilizes a 39mm stainless steel case with a 150-meter depth rating. The flat white dial features applied blued steel hour markers and a matching broad-arrow minute hand, establishing a high-contrast visual architecture derived from mid-century nautical chronometers.
Beneath the sapphire caseback, this specific model houses the self-winding Caliber 2500, representing the earliest commercial integration of George Daniels’ Co-Axial escapement into the Seamaster line.
Founded in 1848 by Louis Brandt in La Chaux-de-Fonds, Switzerland, the company that would become Omega established its identity with the 1894 introduction of the 19-ligne 'Omega' calibre. This movement was a landmark in industrial watchmaking, utilizing interchangeable components to streamline production and repair—a philosophy of accessible precision that continues to define the brand.
Omega cemented its reputation for robust accuracy through its role as the Official Timekeeper for the Olympic Games since 1932 and, most famously, through the Speedmaster Professional's flight qualification by NASA, which culminated in its journey to the Moon.
In the modern era, the brand's most significant contribution has been the industrialization of the co-axial escapement, an invention by Dr. George Daniels that fundamentally reduces friction within the calibre for superior long-term chronometric stability. Typified by purpose-driven design, Omega's collections—from the abyssal-depth Seamaster to the iconic Speedmaster—are archetypes of the professional tool watch, balancing legible aesthetics with advanced material science and anti-magnetic properties through its Master Chronometer certification.
Overall Grade: 8.5 / 10 | Great Condition, Minor Visible Wear Production: est. 2000's Contents: Watch Only Genre: Everyday Sports Watch
Size: 39mm Thickness: approx. 11mm Lug Width: approx. 20mm
Case: Stainless steel, brushed sides and mirrored facets, light visible wear Bezel: Stainless steel, fixed, mirrored bezel, light visible wear Dial: White dial, frosted texture, applied blue-heated markers, lumed Hands: Blued steel, broad-arrow hands, lumed
Crown: Stainless steel, screw-down crown, light visible wear Crystal: Sapphire crystal, A/R coated, light visible wear Bracelet: Stainless steel bracelet, light visible wear Caseback: Stainless steel, sapphire window, screw-caseback, light visible wear Movement: Automatic Chronometer Caliber: Co-Axial 2500