Omega Speedmaster ’57 Chronograph 3188.8.131.52.01.001. Limited Edition of 3,557. 60th anniversary tribute to the 1957 original ‘Broad Arrow’, the first speedmaster and chronograph. Famous manual-winding Chronometer movement, know for its journey to the moon, Omega Caliber 1861. 48 hour power reserve. 38.6mm steel case diameter. Steel tachymeter bezel. Water resistant to 60 meters. Black dial with sub dials and index hour markers. Features include centre sweep seconds, small seconds subdial, 12 hour dial and 30 minute dial. Steel bracelet with folding clasp. Additional nato and leather straps included. Box and papers dated December 2017. Pre-owned UNUSED. Our reference S22214.