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

[US] Omega Seamaster Professional 300m - 42mm - Blue - 210.30.42.20.03.001 - Full Set

Omega - 210.30.42.20.03.001 · $4,475

This Omega Seamaster Professional 300m is a high-performance watch that features mechanical functions without issue.

Condition: Fantastic with minor hairlines on clasp, case, and bracelet
Water Resistance: 300m depth rating
Case Diameter: 42mm

Posted at

Jan 14, 2026, 7:59 AM

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Omega Seamaster 300M Beijing Olympics - $3750

Omega - 522.30.42.20.03.001 · $3,750

Omega Seamaster 300m Master Co-axial 42 Beijing 2022 Olympic Winter games, sized for a 7.1 in wrist, comes with limited edition box.

Condition: Preowned, in great condition
Size: 42mm diameter
Water Resistance: 300m depth rating

Posted at

Jan 14, 2026, 7:48 AM

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Omega Seamaster 120M Ref. 2511.83 | Japan Exclusive | Pre-Aqua Terra | $1000 OBO | Shipping & Tariffs Covered

Omega - 2511.83 · $1,000

A 36mm stainless steel Omega Seamaster 120M with a quartz movement and a sunburst blue dial, characterized by its understated design and nuance.

Condition: good, unpolished condition with wear marks
Material: stainless steel
Case diameter: 36mm
Strap size: 18 mm

Posted at

Jan 14, 2026, 7:09 AM

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Omega Seamaster 300M Co-Axial Mid-size 2220.80 Box and Card - $2,850 - Reserved for u/hachoopoo

Omega - 2220.80 · $2,850

A mid-size Omega Seamaster 300M Co-Axial watch with a 41mm steel case and automatic co-axial cal 2500 movement. The watch features a sapphire crystal and comes with an original Omega steel bracelet.

Condition: Excellent condition with minimal marks/hairlines
Case size: 41mm diameter
Movement: automatic co-axial cal 2500
Bracelet length: fits up to 7-7.25 inch wrists depending on wrist shape

Posted at

Jan 13, 2026, 11:01 PM

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Omega Seamaster Aqua Terra 150M Shades 38mm Green – Full Set

Omega - 220.10.38.20.10.002 · $4,999

This Omega Seamaster Aqua Terra Shades 38mm features a green dial and is powered by the Caliber 8800 Co-Axial Master Chronometer movement.

Condition: Excellent
Case size: 38mm diameter
Water resistance: 150m depth rating
Dial color: Green

Posted at

Jan 13, 2026, 10:45 PM

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Omega Seamaster GMT 50th Anniversary 2234.50 - $1,990

Omega - 2234.50 · $1,990

Up for sale is my Omega Seamaster GMT 2234.50 41mm Automatic, a great condition watch with all functions working well.

Condition: Great condition with minor hairlines/marks on case, bezel insert, and bracelet.
Case size: 41mm
Bracelet material: Steel
Crystal type: Sapphire

Posted at

Jan 13, 2026, 9:11 PM

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Omega Aqua Terra Seamaster Quartz 231.10.39.60 38.5mm Grey Teak, Applied Indices - $1,790

Omega - 231.10.39.60 · $1,790

Up for sale is my Omega Aqua Terra Seamaster Quartz 231.10.39.60, a watch measuring at 38.5mm and featuring an Omega 45640 quartz movement.

Condition: 8.9/10 - great condition with minimal marks/hairlines on the case, caseback, high polished steel bezel and bracelet clasps/sides
Movement: Omega 45640 quartz movement
Case Size: 38.5mm diameter
Crystal Type: sapphire crystal

Posted at

Jan 13, 2026, 9:01 PM

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