The Seamaster Aqua Terra is a superb tribute to OMEGAs rich maritime heritage. This slim 30 mm model achieves its refined proportions through OMEGA’s innovative Co-Axial Master Chronometer calibre 8750, certified at the industry’s highest standard by the Swiss Federal Institute of Metrology (METAS).This stainless steel model has a symmetrical polished case and features a screw-in caseback with wave-edged design.The lavender dial is sun-brushed and coloured with tinted lacquer, with a circular date window at 6 oclock. It is highlighted by 11 boat hull-shaped indexes and redesigned faceted hands, with the minute hand tapering to a delicate point. All the applied elements and hands are in 18K white gold, while the indexes and hands are also filled with white Super-LumiNova which emits a blue glow.The watch is presented on an integrated stainless steel bracelet with beautifully rounded polished-brushed links, a foldover butterfly clasp, and OMEGAs easy comfort-adjustment system.White GoldGold in its pure form (24K) is slightly reddish yellow and very soft. It is usually alloyed with other base metals for a diverse variety of uses. Considered to be the premium standard in watch and jewellery making, 18K gold(with at least 75% pure gold) provides the ultimate balance between purity and usefulness. Traditional 18K white gold is alloyed with palladium-copper and offers an excellent resistance to corrosion, while being highly bio-chemically inert. It provides a beautiful hue that suits wearers even with sensitive skin.Stainless SteelStainless steel is certainly the most conventional of watchmaking materials for outer craftsmanship, and offers beauty, strength and affordability. OMEGA uses 316L stainless steel. Known for its corrosion-resistance and high lustre after polishing, this material is often the ideal choice for watches in both daily-use and high-stress situations such as diving and adventure.Sapphire CrystalTo really appreciate the finer details of a timepiece, OMEGA uses synthetic sapphire crystal with a highly scratch-resistant and anti-reflective treatment. Before the machining and finishing processes take place, the sapphire crystals are produced under the Verneuil process, also called flame fusion. It involves the melting of the raw substance using oxyhydrogen flame and the crystallisation of the melted droplets to form a cylinder. Graded 9 on the Mohs-hardness scale (graded 1-10), the resulting sapphire crystals are virtually scratch-proof and very hard, ensuring an unhindered vision at all times.The advantages of this watchInside this timepiece are the revolutionary components that guarantee the highest standards of performance. From the Co-Axial escapement for long-lasting precision, to the silicon balance spring for superior anti-magnetism, OMEGA has conquered every challenge that matters.Calibre OMEGA 8750 Self-winding movement with Co-Axial escapement. Certified Master Chronometer, approved by METAS, resistant to magnetic fields reaching 15,000 gauss. Free sprung-balance with silicon balance spring, automatic winding in both directions. Date display at 6H. Special luxury finish with rhodium plated rotor and bridges with Geneva waves in arabesque.