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 2209.50 - Price Reduced 🔥

Omega - 2209.50 · $2,795

A Omega Seamaster Planet Ocean available in a 42mm case size with an orange bezel, considered one of the best variations by the seller.

Condition: Excellent shape, very light wear around the piece
Case Size: 42mm diameter
Bezel Type: orange

Posted at

Dec 16, 2025, 1:01 PM

Active

View listing on r/WatchExchange

Omega Seamaster Planet Ocean 2900.50.81 – 45.5mm Co-Axial💥 – $2,399 Shipped

Omega - 2900.50.81 · $2,399

The Omega Seamaster Planet Ocean features a black dial, 45.5mm case, and Co-Axial Chronometer movement. It has a 600m water resistance and is equipped with a helium escape valve.

Condition: Good overall with honest wear
Case Size: 45.5mm
Water Resistance: 600m

Posted at

Dec 15, 2025, 9:51 PM

Active

View listing on r/WatchExchange

Omega Seamaster Planet Ocean 600m 42mm | 232.30.42.21.01.001

Omega - 232.30.42.21.01.001 · $3,350

a Omega Seamaster Planet Ocean 600m watch in a 42mm size with a 7 inch long bracelet.

Bracelet length: 7 inch

Posted at

Dec 15, 2025, 8:07 PM

Active

View listing on r/WatchExchange

Omega Seamaster Planet Ocean 600m Worldtimer | 45.5mm Ceramic Diver | ref. 215.92.46.22.01.007

Omega - 215.92.46.22.01.007 · $11,850

A complete Omega Seamaster Planet Ocean 600m Worldtimer with a 45.5mm ceramic case, featuring a worldtimer function and 600m depth rating.

Condition: 10/10
Case Size: 45.5mm diameter
Depth Rating: 600m

Posted at

Dec 15, 2025, 4:26 PM

Active

View listing on r/WatchExchange

OMEGA Seamaster Planet Ocean 6000M "Ultra Deep" Summer Blue Ref. 215.30.46.21.03.002 - ULTIMATE SET!

OMEGA - 215.30.46.21.03.002 · $12,500

The OMEGA Seamaster Planet Ocean 6000M 'Ultra Deep' Ref. 215.30.46.21.03.002 is a commercially available version of the deep-sea watch originally developed for the Five Deeps Expedition, featuring a massive 45.5mm case made from high-grade stainless steel and powered by the Co-Axial Master Chronometer Calibre 8912.

Condition: UNWORN
Material: O-MEGASTEEL
Water resistance: 6000m (20,000ft)
Diameter: 45.5mm

Posted at

Dec 14, 2025, 11:57 PM

Active

View listing on r/WatchExchange

[WTT] Omega Seamaster Planet Ocean 600M - Skyfall Limited Edition - w/ Omega Service Price Drop

Omega - 232.30.42.21.01.004 · $4,850

This Omega Seamaster Planet Ocean 600M is a limited edition Skyfall model, featuring a black dial and 42mm case size. The watch has been recently serviced by Omega and comes with service receipt and removed parts.

Condition: Pre-owned, recently serviced by Omega in August (service receipt included)
Movement: Omega's in-house caliber 8507b with silicon balance spring for increased anti-magnetic properties
Water resistance: 600 meters (2000 feet)
Bracelet size: Sized to 7 inch wrist, with additional links included

Posted at

Dec 14, 2025, 2:46 PM

Active

View listing on r/WatchExchange