The Omega Speedmaster reference 304.23.44.52.13.001 features a 44mm case crafted from stainless steel, ceramic, and Sedna gold. This automatic winding timepiece is powered by the Omega caliber 9904 movement, which includes a chronograph function, date display, and moonphase complication. It is a certified chronometer and utilizes a co-axial escapement for enhanced precision. Released in 2016, this model showcases a brown dial that complements its robust design.