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 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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Omega Seamaster 212.30.41, 41mm No Wave Dial - $2,890

Omega - 212.30.41.20.03.001 · $2,890

This Omega Seamaster is a great condition diver's watch with an automatic movement and 300m water resistance, measuring 41mm in diameter.

Condition: Very good condition for its age, minimal marks/hairlines
Movement: Calibre 2500
Case size: 41mm diameter
Bracelet type: Original Omega steel bracelet

Posted at

May 13, 2026, 3:56 AM

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Omega Seamaster 300m ‘Mid-Size’ - 2008

Omega - 255280 · $2,850

a used Omega Seamaster 300m 'Mid-Size' from 2008, available for sale with additional details on the seller's website.

Country Of Origin: New Zealand
Shipping Costs: $60 NZD worldwide, free within New Zealand & Australia

Posted at

May 13, 2026, 1:46 AM

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2019 OMEGA Seamaster Planet Ocean PyeongChang Limited Edition 522.32.44.21.03.001 - Inner box and papers

OMEGA - 522.32.44.21.03.001 · $5,698

This Omega Seamaster Planet Ocean PyeongChang Limited Edition is a unique timepiece crafted to celebrate the 2018 Olympic Winter Games in South Korea, featuring a sporty yet elegant design and coming with two straps and an exclusive presentation box.

Condition: Very good pre-owned condition
Limited Edition Quantity: 2,018 pieces worldwide
Case Size: not specified
Bracelet Length: fits up to 7" wrist

Posted at

May 12, 2026, 11:56 PM

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Omega Seamaster 300 Heritage 234.30.41.21.01.001 Full Set (2022) – Very Good Condition

Omega - 234.30.41.21.01.001 · $4,750

This Omega Seamaster 300 Heritage features a classic vintage-inspired design with a black dial and Omega's in-house Co-Axial Master Chronometer movement.

Condition: Very good condition
Movement: in-house Co-Axial Master Chronometer
Bracelet Condition: light cosmetic wear consistent with normal use

Posted at

May 12, 2026, 11:05 PM

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Omega Seamaster Aqua Terra 38.5mm | Ref. 231.10.39.21.06.001 | Cal. 8500 Co-Axial | Grey Teak Dial | $2,599

Omega - 231.10.39.21.06.001 · $2,599

This Omega Seamaster Aqua Terra 150M Co-Axial is a stainless steel watch with a 38.5mm case, measuring in-house Caliber 8500 and featuring a grey teak-pattern dial.

Condition: great condition
Case diameter: 38.5mm
Movement caliber: Cal. 8500
Movement features: 39 jewels, 60-hour power reserve, 7Hz beat rate

Posted at

May 12, 2026, 10:14 PM

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