For its 20th anniversary, Omega has completely redesigned the Seamaster Planet Ocean collection.
The 4th-generation Seamaster Planet Ocean case and bracelet have been completely reimagined. We speculated what might be coming, based on a slew of teasers Omega has been running. While the 2025 Planet Ocean is not a recreation of an archival reference, its angular lines — including its bracelet — show clear inspiration from the 1970s Seamaster 120 “Baby Ploprof” that we wrote about yesterday, specifically the (Ref. 166.0251).
Some have also likened the look to a Zenith Defy, and it’s certainly targeting that angular, not circular, appeal.
In addition to the new angular aesthetic, key updates include a slimmer 42 mm x 13.79 mm case (47.5 mm lug-to-lug) down from 16.1 mm thick, the removal of the helium escape valve, and the new automatic Co-Axial Master Chronometer caliber 8912 that’s certified by METAS, guaranteeing precision timekeeping of 0/+5 seconds per day.
The movement beats at 3.5Hz, has 38 jewels, uses high-efficiency bi-directional winding, offers a 60-hour maximum power reserve, and is resistant to magnetic fields of up to 15,000 gauss. Additional features include a silicon “Si14” balance spring, Omega free-sprung balance, Co-Axial escapement, and two mainspring barrels, mounted in a series.
This is a professional dive watch that features a two-piece stainless steel case with an internal Grade 5 titanium ring and a solid titanium screw-in caseback, which helps reduce weight and improve structural integrity. A 600-meter water-resistant rating has been maintained while also meeting ISO 6425:2018 dive watch standards. A redesigned, flat-link stainless steel bracelet offers improved ergonomics and a micro-adjustment clasp with a diver’s extension. Rubber straps are also available as an option.
Final Thoughts
A ceramic bezel insert that resembles the rotating dive bezel of third-generation models helps maintain the existing Planet Ocean DNA, despite the new angular case, which represents a significant departure from the twisted-lug aesthetic of its predecessor. Moreover, the dial, including the luminous indices and hour, minute, and central seconds hands, with an applied Arabic numeral in place of the old date window, design, was largely carried over. The lume is two-tone, with blue emitting luminous material for the hour hand, seconds hands, and indices, and green emitting lume on the minute hand and bezel pip.
For those in search of a dive watch, Omega offers the Seamaster 300M, the Seamaster 300, and the Aqua Terra 150M, which are all excellent timepieces that we can highly recommend. However, for those in search of Omega’s most robust dive watch, which has maximum wrist presence, yet in a sleeker form than the 3rd generation Planet Oceans, the 4th generation Seamaster Planet Ocean features a new design that’s both modern and harkens back to the past, in an attractive form.
Retail is $8,600 on a rubber strap for the black and blue models, and $8,900 for the orange version on a rubber strap. On a stainless steel bracelet, the black and blue references retail for $9,200, and the orange retails for $9,500. The reason for a $300 premium on the orange references, according to Omega, is that the orange color is more complex, and thus more costly, to produce.
Photo by Omega.
