quoting for the omega website "The “Speedy Tuesday” takes its first design influence from the original 1978 “Speedmaster Alaska III” model. This watch was produced for NASA, who insisted on a watch that was anti-reflective and easy-to-read in space. For that reason, the “Speedy Tuesday” has stayed true to these qualities with a brushed matt-finish stainless steel case and radial subdials with enlarged numerals."