The fourth-generation "Seamaster Planet Ocean" boasts a sharp design reminiscent of the original "Seamaster 300," while also featuring a slimmer profile and revised shape for improved wearability.
In addition to orange, it is also available in black and blue. The arrow-shaped hands and Arabic numeral indices are inspired by the original Seamaster 300. Automatic movement (Cal. 8912). 39 jewels. 25,200 vibrations/hour. Power reserve of approximately 60 hours. Stainless steel and titanium case (42mm diameter, 13.79mm thickness). 600m water resistance. 1,342,000 yen (including tax).
Edited by Yuto Hosoda (Chronos-Japan)
[Article published in the July 2026 issue of Kronos Japan]
High-spec diver's watches evolve to the 4th generation.
The Omega Seamaster Planet Ocean has been refreshed with a sharper look. This time, we'll take a brief look back at the history of the Seamaster and examine the key points of this updated model.
The Seamaster was born as a multi-purpose watch with high water resistance. Subsequently, it branched into two lines: the lineage of the "Seamaster Aqua Terra," which inherited the concept, and the lineage that continued to evolve from the "Seamaster 300," a professional diver's watch that originated in 1957. The Seamaster Planet Ocean, which appeared in 2005, built upon the latter evolution, and debuted as a model boasting 600m water resistance while being based on the original Seamaster 300. Its design was characterized by a rounded silhouette common to various Omega models at the time, along with a thick, massive feel.
This fourth-generation model retains its water resistance while boasting a revamped, sharper design. This evokes a return to the original Seamaster 300, a trend evident even in the flat-paneled bracelet links. It's also noteworthy that it's more than 2mm thinner than previous models, with shorter lugs for improved balance when worn.
Furthermore, orange, a color that has been used in Omega's professional models to ensure visibility even in the deep sea, will continue to be used. The bezel ring of this model, which features a striking orange, is made of ceramic, giving it a glossy finish and excellent color. In conjunction with this refresh, Omega has developed new formulations and processes to produce a vibrant orange color. It is characterized by a stronger red tone and a more powerful hue than before.
