Omega men's automatic mechanical movement chronometer watch featuring a green dial, luminous silver-tone hands and index markers including minute subdials around the outer rim, date display at the 6 o'clock position, fixed stainless steel bezel, sapphire crystal glass, transparent case back, round 41 mm diameter case with 20 mm wide band, stainless steel bracelet, tang clasp, water resistance to 100 meters (330 feet), annual calendar function, and Co-Axial escapement.