Brand New Authentic Omega Speedmaster First Omega in Space Blue Dial Leather Strap Men's Luxury Watch Model 310.32.40.50.06.001. Brushed and Polished Stainless Steel case with Black Calfskin Leather strap. Brushed and Polished Stainless Steel Tang clasp. Fixed. Tachymeter Scale bezel. Dial description: Luminous Silver Tone Hands and Stick Hour Markers with Minute Markers Around the Outer Rim and 3 Sub-dials on a Blue dial. Swiss Manual Winding movement. Chronograph sub-dials display: Seconds, 30 Minute, 12 Hours. Powered by Omega Calibre 3861 engine with 50 hours power reserve. Watch functions: Power Reserve, Hour, Minute, Second, Chronograph, Speed. Push-Pull crown. Scratch Resistant Sapphire crystal. Round case shape. Case size: 39.70mm. Case thickness: 13.40mm. Engraved Case Back. 50 Meters - 165 Feet water resistant. 5-year WatchMaxx warranty. Also known as model: 31032405006001.