OMEGA 310.60.42.50.01.001 Speedmaster Moonwatch Professional 42 mm, Sedna™ gold on SedProduct Overview The "Speedmaster Moonwatch" is one of the most iconic models in the world. It is a legendary chronograph that has been carried on all six lunar landing missions, embodying Omega's adventurous pioneering spirit. This 42 mm Moonwatch, made of 18K Sedna gold, comes with a bracelet composed of five arched links and features sapphire crystal glass on both the front and case back. Inspired by the design of the fourth generation Speedmaster