Omega Seamaster Chronograph "Big Blue"

Omega Seamaster Chronograph "Big Blue"

Why We Love It

Make no mistake: this is a whole lot of watch.

44mm by 52mm, in point of fact, with a 19mm thickness. While the size might be a bit much for some of us landlubbers who prefer our watches to slide under a suit cuff, for the men it was designed for—professional divers—it was just right. Although modern dive computers render this sort of tool watch obsolete, it’s perfect for the sort of guy who takes comfort from wearing a big hunk of steel on his wrist. 

On a mesh Omega bracelet and with that distinctive blue dial—replete with large luminous indices—this is a watch that can weather any storms without leaving you all at sea.

The Story

Omega’s no stranger to dive watches, or chronographs, so of course it was only natural that they’d be the first to make an automatic diver’s chronograph.

Released in 1972, the Seamaster Reference 176.004 chronograph addressed the timekeeping problem posed by many conventional dive watches. Many of these watches could only measure elapsed time up to an hour, and oftentimes the bezel could be knocked during a dive, leading to an inaccurate reading. The Reference 176.004 chronograph, however, removed any ambiguity with its big center chronograph hand.

This was made possible by using the Calibre 1040, a massive self-winding calibre engineered by Omega’s longtime ally, Lemania. Like many watches that are powered by the calibre—such as the Omega Speedmaster Mark II—such a massive movement necessitated the use of a massive case. With its distinctive dark blue dial and large size, it became known as “Big Blue” by collectors.


SKU: AS02607

Stainless steel case is approximately 43mm (excluding crown and pushers). Reference 176.004. Calibre 1040 Self-Winding Chronograph Movement.

Overall Condition: Case is in very good condition overall with moderate signs of use and wear in keeping with age. Bezel is in very good condition. Dial is in very good condition with patina to the luminescent materials of the hour markers and hands. Signed crown. Case back has some signs of use and wear.

Includes one 22mm mesh Omega bracelet.

More pieces you may enjoy

Heuer Bundeswehr
Ref. 1550SG - Valjoux 22
$ 5,350.00
Breguet Type 20 Sterile Dial Chronograph
Military issued chronograph with nearly 30 years of continuous service!
Heuer Autavia GMT
Mark IV Compressor Case Autavia GMT with GF bracelet
Zenith A. Cairelli CP-2 Chronograph
Italian Military Issued Chronograph
$ 15,900.00


Thank you for your interest in the Tudor Oysterdate Big Rose. Please fill out the form below and we will get back to you shortly.


Our Pledge

Analog/Shift stands behind the authenticity of our products in perpetuity.


We back each Analog/Shift vintage timepiece with a one-year mechanical warranty from the date of purchase.


All of our watches include complementary insured shipping within the 50 states. We are happy to hand deliver your purchase in Manhattan or you may pick it up at our showroom.

International Buyers

Please contact us prior to purchase for additional details on shipping and payment options