Omega Speedmaster Chronograph Mens Watch 3510.50. Omega Watch - Omega Speedmaster Chronograph Watch Omega Seamaster Watch 3510.50 / 3510.50.00 / 35105000 / 351050 Stainless steel case and deployment buckle bracelet, chronograph functions, black dial, 45 jewel precision Swiss automatic movement, tachymeter bezel, hesalite crystal, water resistant to 30m. Case Diameter: 35.5mm Case Depth: 14mm Bracelet Dimensions: 8 inches x 18mm