Omega Seamaster Planet Ocean Seamaster Planet Ocean 600M Co-Axial 42 Stainless Steel - Black / Black / Bracelet

Reference 217.30.42.21.01.001

Omega Seamaster Planet Ocean 600M Co-Axial 42 Stainless Steel - Black / Black / Bracelet

About this watch

The Omega Seamaster Planet Ocean 600M 42 mm 217.30.42.21.01.001 debuted in 2025. The watch features a 42 mm case in stainless steel with a combination of polished and brushed surfaces. It is fitted with a flat sapphire crystal with anti-reflective treatment on both sides, and water resistance is rated at 600 meters (60 bar). The screw-in case back is manufactured from grade 5 titanium and features the Omega seahorse emblem. The polished black ceramic bezel ring carries a diving scale in white enamel, while the inner ring is made of polished grade 5 titanium. The black dial has a matte finish and displays rhodium-plated hands and indexes filled with white Super-LumiNova. Four applied Arabic numerals complete the hour layout. A date window is not present on this model. Inside ticks the Omega Co-Axial Master Chronometer caliber 8912, certified by METAS. The movement operates at 3.5 Hz and has a power reserve of approximately 60 hours, using twin barrels mounted in series and a free-sprung balance with a silicon balance spring. The watch is fitted with a stainless steel bracelet featuring an extendable foldover rack-and-pusher clasp with an additional diver extension.

Buy Now on Jomashop

This is an affiliate link

Specifications

Brand

Omega

Family

Seamaster Planet Ocean

Model

Seamaster Planet Ocean 600M Co-Axial 42 Stainless Steel - Black / Black / Bracelet

Reference

217.30.42.21.01.001

Movement

8912

Movement Features

Hours, Minutes, Seconds
Chronometer, Co-Axial Escapement

Case

42mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

600

Current Listings

Omega Seamaster Planet Ocean 44.5mm $2,599

Omega - 2900.51 · $2,599

The Omega Seamaster Planet Ocean is a full-size, luxury diver with robust construction and classic styling.

Condition: great pre-owned condition
Case diameter: 44.5mm
Lug width: 22 mm
Water resistance depth rating: 600m

Posted at

May 7, 2026, 2:18 PM

Active

View listing on r/WatchExchange

Omega Seamaster Planet Ocean 'Deep Black' Ceramic 46mm (215.92.46.22.01.001)

Omega - 215.92.46.22.01.001 · $5,900

A Omega Seamaster Planet Ocean 'Deep Black' Ceramic watch with a 46mm case size is being sold in good condition.

Condition: Good condition, minor wear on crystal
Case size: 46mm diameter
Depth rating: 600m water resistance

Posted at

May 7, 2026, 2:11 PM

Active

View listing on r/WatchExchange

Omega Seamaster Planet Ocean 43.5MM Blue 215.30.44.21.03.001 - Box and Ebay Authentication Card - $4450

Omega - 215.30.44.21.03.001 · $4,450

The Omega Seamaster Planet Ocean is a stainless steel watch with a blue ZrO₂ ceramic dial, powered by the Caliber 8900 Co-Axial Master Chronometer movement. It has a 43.5mm case diameter, a ceramic bezel, and a water resistance rating of 600m/2000ft.

Condition: Excellent overall, with light surface wear and minor hairlines
Depth rating: 600m
Movement: Caliber 8900 Co-Axial Master Chronometer
Water resistance: 2000ft

Posted at

May 7, 2026, 7:35 AM

Active

View listing on r/WatchExchange

[US] Omega Seamaster Planet Ocean 600m - Black Dial - 45.5mm - 232.30.46.21.01.001 - Full Set

Omega - 232.30.46.21.01.001 · $4,425

This Omega Seamaster Planet Ocean features a black dial and measures 45.5mm in diameter.

Condition: Fantastic condition with minor hairlines on case, clasp, or bracelet
Case diameter: 45.5mm
Water resistance: 600m

Posted at

May 7, 2026, 6:33 AM

Active

View listing on r/WatchExchange

Omega Seamaster Planet Ocean 2201.50 42mm - $2,650 - US BASED!

Omega - Planet Ocean 2201.50 · $2,650

Up for sale is my Omega Seamaster Planet Ocean 2201.50 in great condition for its age, measuring at 42mm with an automatic Omega Calibre 2500 movement.

Condition: Very good condition with minimal marks/hairlines on case, caseback, and bracelet
Movement: Omega Calibre 2500
Case size: 42mm
Bracelet type: Original Omega steel bracelet

Posted at

May 5, 2026, 10:12 PM

Active

View listing on r/WatchExchange

Omega / Seamaster Planet Ocean / 45.5mm / Full Set

Omega - 232.30.46.21.01.003 · $3,950

This Omega Seamaster Planet Ocean is a high-end watch featuring a 45.5mm case, full set with box and papers, and includes extra links for adjustability.

Condition: Excellent
Case Size: 45.5mm

Posted at

May 5, 2026, 3:09 PM

Active

View listing on r/WatchExchange

Omega Seamaster Planet Ocean “007” 232.30.42.21.01.004 — 42mm — Limited 2882/5007 — $5,199 Shipped 🔥

Omega - 232.30.42.21.01.004 · $5,199

Condition: Fair overall, with signs of wear on case and bracelet
Case Diameter: 42mm
Limited Edition Number: 2882/5007
Wrist Size Fit: ~7.4"

Posted at

May 4, 2026, 9:19 PM

Active

View listing on r/WatchExchange

Omega Seamaster Planet Ocean Chronograph 215.92.46.51.99.001 - Complete Set

Omega - 215.92.46.51.99.001 · $108,000

For sale is an Omega Seamaster Planet Ocean Chronograph, a complete set including all original accessories and packaging.

Material: Stainless Steel

Posted at

May 4, 2026, 8:27 PM

Active

View listing on r/WatchExchange

Omega Seamaster Planet Ocean 2201.51 42mm Box and Card - $2,850

Omega - Planet Ocean 2201.51 · $2,850

Up for sale is my great condition Omega Seamaster Planet Ocean 2201.51, measuring at 42mm with an automatic Omega Calibre 2500 movement. It has a steel case on original Omega steel bracelet and comes in double box, cards, manual, and watch on original bracelet.

Condition: Very good condition for its age with minimal marks/hairlines
Case size: 42mm diameter
Bracelet length: fits up to 7-7.25 inch wrists
Movement type: automatic

Posted at

May 3, 2026, 9:00 PM

Active

View listing on r/WatchExchange