OMEGA 310.30.40.50.06.001 Automatic Movement Stainless Steel Case Water Resistant Chronograph FunctionProduct Description On October 3, 1962, astronaut Walter Schirra wore his own watch during the Mercury program's Sigma 7 mission. Thus, the "Speedmaster CK 2998" became the first Omega watch to go into space. This updated model pays tribute to the pioneering timepiece that went to space, modernly arranging the style of the same second generation "Speedmaster." It features a polished and brushed stainless steel case with a diameter of 39. 70mm, paired