Characterised by its thin and elegant case, the Trsor 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 polished 40 mm 18K yellow gold case, which is presented on a grey leather strap. The domed crystal silvery dial includes a Power Reserve display at 12H, a Small Seconds display at 6H, along with hands and domed indexes in 18K yellow gold.Inside, this De Ville Trsor is powered by the OMEGA Co-Axial Master Chronometer Calibre 8935 and is certified at the industrys highest standard of precision, chronometric performance and magnetic resistance.