Omega Women's 4878.90.39 De Ville Co-Axial Automatic Chronograph Watch

 Omega adds a contemporary twist to its DeVille automatic chronograph watch for women, which features large oval chrono subdials (in mother-of-pearl) and a large date window between 10 and 11 o'clock. Measuring 35mm wide (1.38 inches), the polished silver stainless steel watch case is topped by a slightly raised bezel. The deep green dial include thin stick hour markers, luminous hands (with seconds hand) and small minute indexes. A matching green leather strap completes this timepiece. Other features include a 52-hour power reserve, scratch-resistant and glare-proofed domed sapphire crystal, and water resistance to 100 meters (330 feet)--offering protection from accidental splashes as well suitable for swimming, snorkeling, and light recreational diving.

It's powered by Omega's break-through Co-Axial escapement. Developed in conjunction with master watchmaker George Daniels, it's based on double co-axial escape wheel, a lever with three pallet stones and impulse stone on the balance roller, together with a free sprung-balance. The Co-Axial escapement system reduces sliding friction compared with the lever escapement and thus ensures greater accuracy over time.

This watch also features the Omega 3313 caliber automatic movement, which has been certified as a chronometer by the COSC (Swiss Official Chronometer Control). Only 3 percent of watches produced in Switzerland are "chronometer-certified." To achieve this highly coveted certification, the movements are subjected to numerous tests over a period of 15 consecutive days and nights, in five positions and at three different temperatures.