Launched in 1972, the Omega Seamaster Reference 176.004, nicknamed “Big Blue,” was the first automatic diver’s chronograph truly water-resistant to 120m (400ft). It featured a large steel case made by Ervin Piquerez SA, a renowned Swiss case manufacturer. The screw-down caseback, crown, and pushers ensured underwater functionality, while the unidirectional bezel minimized diving errors.

The blue dial, luminous indexes, and orange chronograph hand provided excellent visibility underwater. Powered by Omega's first automatic chronograph movement, the caliber 1040, it was the ultimate tool watch for underwater functionality and style.

The Seamaster is the longest running product line still produced by OMEGA today. It was introduced in 1948, and was loosely based upon designs made for the British Royal Navy towards the end of World War II.

Brand:

OMEGA

Made:

1974

Model:

Seamaster

Reference:

176.004

Calibre:

1040

Movement:

Automatic

Material:

Stainless steel

Features/complications:

Date aperture at 3 o'clock, chronograph, 24 hour indicator at 9 o'clock, rotating unidirectional bezel

Dial:

Blue dial with block hour markers (tritium) central yellow arrow shaped minute hand and seconds hand (two versions), a date window at 3 o’clock, a 12-hours sub dial at 6 o’ clock, and a 24-hours indicator placed at 9 in the constant second sub dial

Case dimensions:

-mm

Bracelet/strap:

Stainless steel bracelet

Accessories:

-

SKU:

03390

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