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

2023 Omega Seamaster SMP300m Green Wave Dial “Seaweed” Reference 210.32.42.20.10.001 - Box and Papers

Omega - 210.32.42.20.10.001 · $4,727

2023 Omega Seamaster Diver SMP300M 42mm Green Wave Dial 'Seaweed' watch in excellent condition, running great and keeping time to spec.

Condition: Excellent
Case condition: Minimal signs of wear
Crystal condition: Clean and scratch-free
Water resistance: 300m

Posted at

May 13, 2026, 2:33 PM

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2026 Omega Seamaster 210.30.42.20.06.002 - Box and Cards

Omega - 210.30.42.20.06.002 · $5,350

This is a unique Omega Seamaster reference with a brushed finish dial, measuring at 42mm in diameter.

Condition: lightly owned
Bracelet size: 42mm diameter
Material: stainless steel
Water resistance:

Posted at

May 13, 2026, 1:45 PM

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Omega Seamaster Professional midsize Ref. 2552.80 | Great Unpolished Condition | $2100 (SERVICED)

Omega - 2552.80 · $2,100

This Omega Seamaster Professional midsize is a compact and balanced watch that's great for everyday wear.

Condition: Great condition
Bracelet Length: 17.8cm
Case Width: 36.25mm (excluding crown)
Lug To Lug: 44mm

Posted at

May 13, 2026, 1:00 PM

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Omega Seamaster Planet Ocean 600M – 42mm Titanium – Mint Set

Omega - 232.90.42.21.03.001 · $4,950

The Omega Seamaster Planet Ocean 600M features a titanium case and bracelet, blue ceramic bezel and dial, and an automatic chronometer movement.

Condition: Mint condition
Case size: 42mm
Water resistance: 2000ft / 600m
Movement: Omega Calibre 8500 automatic chronometer

Posted at

May 13, 2026, 12:51 PM

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Omega Seamaster Calendar 2627 Goldcapped $990

Omega - 2627 · $990

This Omega Seamaster Calendar is a beautiful goldcapped watch from 1952, featuring a stainless steel case with a 14k layer and an acrylic crystal. It has a bumper movement, dauphine hands, and a trapezoid date window at 6 o'clock.

Condition: great condition with signs of wear
Case dimensions: 35mm diameter, 41.5mm lug to lug, 18mm lug width
Movement: Omega cal. 355 bumper movement
Crown shape: bolier hat shaped with Omega logo

Posted at

May 13, 2026, 9:15 AM

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[US] Omega Seamaster Diver 300m - Blue Dial - 41mm - 212.30.41.20.03.001 - Full Set

Omega - 212.30.41.20.03.001 · $3,525

An Omega Seamaster Diver 300m in blue dial, 41mm size, and reference number 212.30.41.20.03.001 is up for sale.

Condition: Fantastic condition with minor hairlines on clasp, case, and bracelet
Case size: 41mm diameter
Depth rating: 300m

Posted at

May 13, 2026, 7:59 AM

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Omega Seamaster Aqua Terra First Gen Quartz 36mm 2518.30 $1,450

Omega - 2518.30 · $1,450

Selling a first-generation Omega Seamaster Aqua Terra Quartz Watch with a 36mm case.

Condition: Very minimal signs of use, recently polished
18.5cm: length of bracelet

Posted at

May 13, 2026, 4:23 AM

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Omega Seamaster 212.30.36 Wave Dial Mid Size 36mm - $1,790

Omega - 212.30.36.30.01.001 · $1,790

The Omega Seamaster 212.30.36 is a 36mm automatic watch featuring the Omega Calibre 2500 movement.

Condition: Good condition for its age, minimal marks/hairlines on case and bracelet, some wear on bezel insert
Case Size: 36mm
Movement Type: Automatic

Posted at

May 13, 2026, 4:17 AM

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Omega Seamaster Planet Ocean Orange 232.30.42 42mm - $3,350 - Reserved Post for u/3twellv

Omega - 232.30.42.21.01.002 · $3,350

This Omega Seamaster Planet Ocean Orange features a steel case and original Omega steel bracelet. It has a clean crystal and AR coating, and all functions are working well.

Condition: Excellent (8.8/10) - minimal marks/hairlines on case, bezel insert and bracelet
Case size: 42mm diameter
Bracelet type: Original Omega steel bracelet
Bezel material: Steel

Posted at

May 13, 2026, 3:59 AM

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