Characterised by its thin and elegant case, the Trésor line was first launched by OMEGA in 1949 and housed the legendary 30mm calibre. More than half a century later, it continues to impress with one of todays most advanced mechanical movements. This model has a 40 mm stainless steel case, which is presented on a black leather strap. The domed opaline silvery dial includes a date window at 6 o'clock as well as hands and indexes in 18K white gold. Inside, this De Ville Trésor is powered by the OMEGA Co-Axial Master Chronometer Calibre 8910 and is certified at the industrys highest standard of precision, chronometric performance and magnetic resistance. Calibre Omega 8901: Manual-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. Rhodium plated finish with Geneva waves in arabesque. FEATURESAnti-magnetic: The movement is unaffected by exposure t