Movement OMEGA calibre 1861 Manual-winding chronograph Jewels: 18, Frequency: 21’600 A/h (3 Hz). Power reserve: 45 hours. Exclusive features with: Glucydur balance, movement used in the famous "Moon Watch".

Case: watch case diameter : 42.00 mm, height : 13.55 mm. Water resistant up to : 50 m (167 ft). Polished and brushed stainless steel casebody, stainless steel bezel, black aluminium ring with tachymeter scale.

Stainless steel crown and pushers, Omega logo on crown. Domed hesalite crystal with Omega logo at the centre Screwed-in stainless steel caseback stamped with seahorse medallion, "Flight-qualified by NASA for all manned space mission", "Alaska Project" and engraved with limited edition number.

Outer case: Diameter : 58.00 mm (closed). Height : 26.00 mm (with watch inside). Material : aluminium. Surface treatment : red, by "sulphuric decorative anodising" (eloxage)
Velcro strap openings : at 6H and 12H.

External chronograph pushers : polished stainless steel, inner protection tip in Delrin
Inner ground for watch holding : 4 stainless steel pistons, protection tip in Delrin. Front inscriptions : "Alaska Project" at 12H, "Outer Space Extreme Temperature Instrument" at 6H, 60-minute track.

Back inscriptions : Omega name-logo, "Speedmaster Professional" at the centre; "Limited edition of 1970 watches"; "Temperature resistance [-148°C / +260°C]
Side inscriptions : Omega logo between pushers; "Close" with directional sign between 9H-10H
Display: Central hour-minute hands, small seconds at 9H
Central chronograph seconds hand, 30-minute recorder at 3H
12-hour recorder at 6H.

Dial: Semi-mat white dial. Transferred Omega name-logo, hour markers coated with Super-LumiNova
Hands: Varnished black-and-white hour-minute hands coated with Super-LumiNova, varnished black small seconds hand at 9H
Red central Chronograph seconds hand with Super-LumiNova.

Varnished black chronograph recorder hands in shuttle shape, coated with Super-LumiNova. Bracelet: Polished and brushed stainless steel bracelet with safety clasp; Two Velcro straps with brushed red aluminium buckle.

Fitting : 20 mm between lugs. Specifications: Limited edition of 1970 pieces
Special presentation box with a set of tools