The Seamaster Aqua Terra is a superb tribute to OMEGA’s rich maritime heritage. In this 38mm model, the symmetrical case has been crafted from stainless steel, with a wave-edged design featured on the back. The blue dial is sun-brushed and is distinguished by a horizontal “teak” pattern which is inspired by the wooden decks of luxury sailboats. There is also a date window at 6 o\'clock and rhodium-plated hands and indexes filled with white Super-Lumi Nova. The blue strap is made from structured rubber and includes grey lining and an additional stainless steel link which integrates it to the case. This certified chronometer is powered by the OMEGA Master Chronometer calibre 8800, certified at the industry’s highest standard by the Swiss Federal Institute of Metrology (METAS).Calibre Omega 8800: 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. Rhodium plated finish with Geneva waves in arabesque. FEATURESAnti-Magnetic: The movement is unaffected by exposure to strong magnetic fields, even those greater than 1. 5 tesla (15, 000 gauss).Automatic Watch: A self-winding watch or automatic watch uses a mechanical movement whose main spring is wound automatically by the natural motion of the wearer\'s arm. Chronometer: Label given to a watch which has undergone precision tests and received a certificate from an official body (COSC).Date: The day of the month, displayed in a window on a watch dial at the 3 or 6 o’clock position, or within a subdial at 9 o\'clock. Master Chronometer Certified: Guaranteeing the Swiss industry’s highest standard of precision, performance and magnetic-resistance, as set by the Swiss Federal Institute of Metrology (METAS).Screw-in Crown: Self-locking crown, screwed into the tube of the case, used for highly water resistant divers\' watches. Transparent Case Back: A transparent