331.12.42.51.03.001Ref

The Speedmaster 57 is a modern tribute to Omega's first-generation Speedmasters, featuring a straight-lug case and a bezel with the tachymeter scale engraved. These features were found on early versions of the iconic chronograph, while later models feature the swirling 'lyre' lugs and a separate inlay bezel still in use today. As reference 331.12.42.51.03.001, it has a stainless steel case, calf leather strap, and a blue dial.