Omega Seamaster Planet Ocean Gen 4 Review

Vetnov · 2026-02-13T06:37:44Z

Two-week review of the Omega Seamaster Planet Ocean Gen 4. Explore its thinner case, 42mm size, and polarizing design choices like the angular case and polished links. Essential reading for dive watch enthusiasts.

Vetnov

WPS member · Omega forum

20 replies1169 views9 photos

Vetnov's detailed two-week review of the fourth-generation Omega Seamaster Planet Ocean offers a crucial early perspective on a watch that has sparked considerable debate among collectors. His insights into its wearability, design choices, and comparison to previous generations and competitors provide invaluable context for anyone considering this polarizing reference. This article distills Vetnov's initial impressions and the community's reactions, highlighting key aspects that define this evolution of the iconic dive watch.

20 collectors discussing this on the WatchProSite forumJoin the Conversation →

As stated I have worn this one for 2 weeks since receiving it, and during that time I have read many reviews and watched many video reviews. The watch seems to be relatively polarizing as there are a number of varying opinions on it. Other than some comparable specs I am showing from this one and watches it might be competing with the rest are just my opinions.

Compared to the gen 3 PO 600m models the gen 4 is more than 2mm thinner and 42mm vs 43.5mm in diameter. The gen 4 is more similar to the Seamaster 300m models in thickness and diameter. In comparison to 41mm Subs it is about 1.5mm thicker while the lug to lug width is the same at 47.5mm (the lug to lug width was reduced 2.5mm vs gen 3 models). The 41mm Tudor Black Bay dive models have similar thickness to the new Omega (13.6mm) but the lug to lug distance is closer to 50mm.

As far as my opinions go I love this watch. It is very comfortable and doesn’t feel too big for 42mm. I think the reduced lug to lug width really helps with this. I like the lack of a date which can often unbalance dials. The simple matte black dial and orange numerals look great. The great looking orange bezel seems to be a nod to some of the gen 1 models that had orange aluminum bezel inserts.

The 3 things people were in most disagreement with.
1. The sharp angular case. Many people still prefer the more rounded case from previous models. I like the design, I don’t have an explanation. I just do. It looks great with the angled links of the bracelet imo.
2. The helium valve. There are many out there that feel like the helium valve has to be present for the watch to be a Planet Ocean, that it’s an essential part of the watch’s DNA. There are many that are glad it’s gone. All I can say is that I never would have bought one with the valve. In my opinion it is an unnecessary thing sticking out at 10 o’clock that serves no purpose since 99.999% of people will never dive to a depth in which it is needed.
3. The mirror polished center links of the bracelet. Most people thought all the links of the bracelet should be brushed, and this is one I agree with. They can catch light in a way that can be blinding, and perhaps more important they scratch easily. I’ve had this thing 2 weeks and there are scratches all over them. Personally I don’t care but if you like the watch and are bothered by scratches get the rubber strap instead of the bracelet.

Thanks for reading, pictures of the watch below and specs of the watches talked about in a format that might be easier to compare.

About the Omega Seamaster Planet Ocean Ref. 215.30.44.21.01.002

The Omega Seamaster Planet Ocean represents a contemporary evolution of Omega's diving watch heritage, launched in 2005 as a purpose-built tool watch for serious underwater exploration. While Omega's maritime connections trace back to the original Seamaster of 1948, the Planet Ocean carved its own identity as a robust, oversized dive watch designed to compete with modern luxury sports watches. The collection has undergone several generational updates, with each iteration refining the proportions and movement technology while maintaining the core design DNA of bold orange accents and professional diving credentials.

This fourth-generation Planet Ocean showcases Omega's commitment to both technical advancement and visual impact. The unidirectional rotating bezel features a orange ceramic insert with white numerals, providing both durability and legibility underwater. The black dial incorporates applied indices and Arabic numerals at 3, 6, 9, and 12 o'clock, finished with orange accents that create visual continuity with the bezel. Water resistance extends to 600 meters, supported by a helium escape valve for saturation diving applications. The substantial case proportions and bracelet construction reflect modern preferences for larger, more substantial timepieces.

In the current market, the Planet Ocean occupies a strategic position within Omega's portfolio, offering serious diving capability at a more accessible price point than comparable Rolex Submariner models. The orange bezel variant has developed particular appeal among collectors who appreciate its distinctive colorway and professional specifications. Recent generations have benefited from Omega's co-axial escapement technology and Master Chronometer certification, enhancing both precision and magnetic resistance for contemporary users.

Specifications

Case: steel

Diameter: 43.5mm

Dial: black

Key Points from the Discussion

The new 42mm Gen 4 Planet Ocean, despite its diameter, wears smaller than expected due to its reduced thickness and the absence of the helium escape valve, making it more wearable for those who found previous generations too large.
Polarizing designs, like the angular case of the Gen 4 Planet Ocean, often gain appreciation over time, a trend observed with other bold luxury watches that initially faced criticism but later became sought-after.
The difficulty in replicating the vibrant orange of the original aluminum bezels in ceramic might explain the Gen 4's bezel color and potentially its higher price compared to other color variants.
While some collectors appreciate the angularity of the new case, reminiscent of vintage Omega SHOM models, the polished center links of the bracelet are a point of contention, with many preferring a fully brushed finish or a rubber strap option.
New watch releases frequently encounter initial negative opinions, but many eventually gain traction and become enduring parts of a brand's collection, suggesting that initial reactions to the Gen 4 Planet Ocean may evolve.

The Discussion

SALMANPK

Feb 13, 2026

Looks Fantastic 👍

amanico

Feb 13, 2026

Thanks for having taken the time to write this post and to share your feelings on this new Seamaster. I still have to see one in person before any final judgement.

Vetnov

Feb 13, 2026

I’m interested to hear your thoughts

after you see it in person. Thanks👍

Feb 13, 2026

Spent a while with one and love the angular look too

Marc Obermann

Feb 13, 2026

Great looking Omega Seamaster Gen 4 Planet Ocean.

Thanks for your great feedback and comparison to the other divers, wear and enjoy it in good health. Marc

myles721

Feb 13, 2026

Thank You!

As an owner of the 2500, PO Chrono and the PO GMT I like SHOM like angularity of the case. I was a bit put off by the bracelet when I tried it on. I really wished that they had addressed the valve issue in the way they did with PLOPROF or Rolex did. I never minded the extra crown. All of that being said my ideal iteration would either be a ceramic version with a rubber strap, the “Bond” mesh bracelet with steel and I would like to see a gradient fume style dial…something really distinctive so I