Steel chronograph wristwatch, matt black dial, white stroke timer, tachymetric scale on the aluminium bezel, hour index white decal sticks with luminescent material (tritium), small seconds to nine hours, totalizer of the 30 minutes of the chronographer at three hours, and 12 hours to six hours, white luminescence needles, central second Luminescent chronograph. Screwed case back made of steel, hippocampus, Omega logo and mention "Speedmaster", inside signed Omega reference ST145.022, manufacture C.R.S. Dust cover made of soft iron, mechanical movement of chronograph with manual winding Omega calibre 861 numbered 45251465. Omega steel bracelet, folding clasp signed Omega, reference 1171/1, end pieces 633. Functional watch and chronograph during the expertise, without guarantee of future operation and condition of the parts, preview revision. Stripes on the case, on the glass and on the bracelet. Around 1982 Diameter 42 mm