November 3, 2026
Rethinking the Color of the Sea
Most people picture the ocean as blue, yet that image overlooks a great deal of variation. Beyond the countless blues stretching from sunlit tropical shallows to inky abyssal depths, many of the sea’s richest zones, such as reefs, shallows, and the churn between waves, actually look green. Drawing on this idea, the revived Swiss label Sicura has unveiled the Hexa 400 Sea Green. This verdant take on its flagship dual-crown diver channels the brand’s celebrated 1960s heritage.
A Storied Swiss Legacy
Founded in Grenchen in 1939, Sicura led Swiss watchmaking innovation during the 1960s and ’70s. It pioneered multi-bezel dive systems, early quartz designs, Space Age jumping-hour displays, dual-crown divers, transistor and solar-powered watches, and even miniaturized electronic computers. In 1979, at the height of the Quartz Crisis, Sicura’s owner acquired Breitling, preserving another great Swiss name. Today’s Sicura seeks to revive that inventive spirit, including a reinterpretation of the classic 1968 Diver 400.
Distinctive Hexagonal Construction
The watch shares the series’ 40mm 316L stainless steel case, which is defined by two signature traits. First, generously sized screw-down pillbox crowns at 2 and 4 o’clock separately control the standard winding and time-setting functions and the internal dual-time bezel. Second, the hexagonal profile features angled flanks that meet in sharp points at 3 and 9 o’clock. Paired with hooded lugs, this shape showcases crisp brushed finishing. Above sits a round, 120-click unidirectional bezel with a deeply toothed edge, a glossy black ceramic insert, and a fully lumed dive scale. The caseback bears Sicura’s polished, raised marine shield emblem, and water resistance reaches an impressive 400 meters.
A Dial Rich in Character
The dial blends vintage cues, like segmented sword hands and distinctive Arabic numerals at 12 o’clock, with modern touches. These include faceted applied indices, a tapered date window at 3 o’clock, and a bold two-tone inner 12-hour bezel. Its fine-grain matte surface in deeply saturated green sets it apart from other dive watches while retaining an aquatic feel. Yellow “Hexa 400” text at 6 o’clock adds vivid contrast.
Movement, Bracelet, and Availability
The watch is powered by the reliable, easily serviced Swiss Sellita SW200 automatic movement. An integrated three-link 316L steel bracelet offers tool-free sliding micro-adjustment for wetsuit wear or all-day comfort, along with a safety lock and dual push-button release. The Sicura Hexa 400 Sea Green is available now through authorized dealers at an MSRP of $1,380 USD.
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