Omega De Ville Prestige Co-Axial Power Reserve Watch - 39.5 mm Steel Case - Silver Dial - Brown Leather Strap - 424.13.40.21.02.00239. 5 mm steel case, steel bezel, sapphire crystal with anti reflective treatment inside, silver dial with red gold coloured roman numeral hour markers and polished cabochons, caliber 2627 self winding movement with chronometer, co axial escapement with rhodium plated finish, approximately 48 hours of power reserve, brown leather strap. Water resistant to 30 m (100 ft).