Omega Seamaster Seamaster Chronograph

Reference ST 176.007

About this watch

The Omega Seamaster ST 176.007 Seamaster Chronograph is a stunning timepiece that effortlessly combines elegance with functionality. Produced between 1972 and 1976, this classic beauty is not just a tool for telling time; it’s a piece of history, a statement of style, and a marvel of horological engineering. At the heart of the ST 176.007 is the Omega caliber 1040, an automatic chronograph movement that’s as robust as it is reliable. This movement is actually Omega’s version of the Lemania 1340, known for its durability and precision. With a 40-hour power reserve and 17 jewels, this movement is designed for performance. The design of the Omega ST 176.007 is truly captivating, with a cushion-shaped case measuring 38.50 mm in diameter that strikes the perfect balance between boldness and wearability. The sunburst blue dial is one of the most striking features of this timepiece, offering versatility and sophistication. Whether you’re at the office or enjoying a night out, this watch is sure to enhance your style with its elegant design and robust functionality.

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Key Features

Omega caliber 1040 automatic chronograph movement
Cushion-shaped stainless steel case measuring 38.50 mm in diameter
Sunburst blue dial with stick indexes and hands
60 meters water resistance, suitable for everyday wear
Plexiglass crystal offers a soft, warm look
Robust automatic chronograph movement with 40-hour power reserve
Date complication ensures precise timekeeping

Specifications

Brand

Omega

Family

Seamaster

Model

Seamaster Chronograph

Reference

ST 176.007

Movement

1040

Movement Features

Small Seconds, Minutes, Additional 24 Hour Hand (adjustable)
Date
Chronograph

Case

Stainless Steel 38.5mm

Dial Color

Blue

Crystal

Plexi

Water Resistance

Current Listings

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Omega Seamaster Railmaster XXL watch, purchased from Watchesmiles just over a month ago.

Condition: great condition
Case Size: 49.2mm diameter

Posted at

Feb 13, 2026, 7:12 PM

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2024 Omega Seamaster Diver 300M with a 42mm black ceramic wave dial and automatic movement, powered by Omega's Master Chronometer.

Condition: Excellent (minimal wear)
Movement: Automatic (Omega Co-Axial Master Chronometer Caliber 8800)
Case Size: 42mm
Water Resistance: 300m

Posted at

Feb 13, 2026, 6:49 PM

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Posted at

Feb 13, 2026, 3:36 PM

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Condition: Good with minor imperfections (clasp scuffing)
Bracelet material: Stainless steel
Case condition: Good
Movement accuracy: -2 to -7 seconds per day (timegrapher)

Posted at

Feb 13, 2026, 3:11 PM

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Omega Seamaster Railmaster XXL 49.2mm

Omega - Railmaster XXL

This listing does not contain a description of the watch.

Size: 49.2mm diameter

Posted at

Feb 13, 2026, 2:56 PM

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Omega Seamaster Railmaster XXL 49.2mm

Omega - Railmaster XXL · $3,500

A large Omega Seamaster Railmaster model with a unique design, sold as is without original packaging or documentation.

Posted at

Feb 13, 2026, 2:55 PM

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2018 Omega Seamaster Diver 300m Blue Dial Steel No Wave 212.30.41.20.03.001 B+P

Omega - 212.30.41.20.03.001 · $3,600

The Omega Seamaster Diver 300M features a classic blue dial, stainless steel case and bracelet, and an automatic self-winding movement.

Condition: Great condition, 93%
Case diameter: 41mm
Movement: Coaxial 2500 automatic self-winding
Crystal: Sapphire

Posted at

Feb 13, 2026, 2:20 PM

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2023 Omega Seamaster Diver 300m White Dial on Bracelet 210.30.42.20.04.001 B+P

Omega - 210.30.42.20.04.001 · $4,600

This Omega Seamaster Diver 300M features a stunning white wave-pattern dial paired with a black ceramic bezel and is equipped with the Co-Axial Master Chronometer Caliber 8800 movement.

Condition: Excellent
Movement: Self-winding Mechanical
Case material: Stainless Steel
Bezel material: Black Ceramic

Posted at

Feb 13, 2026, 2:05 PM

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2024 Omega Seamaster Diver 300m Green Dial on Bracelet 210.30.42.20.10.001 B+P

Omega - 210.30.42.20.10.001 · $4,900

This stunning Omega Seamaster Diver 300M reference number 210.30.42.20.10.001 features a green wave-pattern dial, green ceramic bezel, and Co-Axial Master Chronometer Caliber 8800 movement.

Condition: Excellent (with minor signs of wear)
Case Diameter: 42mm
Crystal Type: Sapphire
Bezel Material: Green Ceramic

Posted at

Feb 13, 2026, 1:38 PM

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View listing on r/WatchExchange