Trésor in French means Treasure: The De Ville Trésor of the late 1940's was named such because it safeguarded the legendary 30mm calibre within. Polished stainless steel case. Domed blue textured dial. Polished hands, the seconds hand has a curved end to match the shape of the dial. Applied polished index hour markers. Date window displayed at the 6 o'clock position. Movement: Omega manually wound caliber 8910, beats at 25,200 vph, contains 29 jewels & has an approximate power reserve of 72 hours. METAS Certified Master-Chronometer: The assembled watch, with its COSC certified Chronometer movement, passes rigorous tests that replicate real-life conditions. The METAS certification tests water resistance, precision and magnetic resistance. Anti-magnetic: resistant to magnetic fields greater than 15,000 gauss. Features a free-sprung balance with silicon balance spring & Omega's Co-Axial Escapement. The bridges are rhodium plated & decorated with Geneva waves in arabesque.