Steinhart Ocean One: Explore the Depths of Dive Watch Design

Seconds matter when you’re deep underwater, and your watch shouldn’t slow you down. Every detail counts, from luminous markers to a unidirectional ceramic bezel, ensuring precision and safety on every dive. The Steinhart Ocean One delivers reliability, robust construction, and Swiss-made craftsmanship that watch enthusiasts and professional divers can trust.

This highlights the standout features of Steinhart dive watches, including their durable stainless steel and titanium cases, high-performance Swiss movements, and water resistance built for serious underwater exploration. 

Let's dive into the explanation to discover why the Steinhart Ocean One remains a top choice for divers and those passionate about watches.

An Introduction to the Steinhart Ocean One Collection

The Steinhart Ocean One series is a line of Swiss-made diving watches built for professional divers who value precision, durability, and classic design. These watches are engineered to withstand underwater adventures, offering water resistance up to 300 meters (30 ATM), so you can rely on them even in challenging conditions.

Ocean One watches feature essential diving functionalities, including a rotating bezel and a robust stainless steel case, reflecting high-quality Swiss craftsmanship.

For those who prefer a slightly smaller profile, the Ocean 39 sub-collection offers a compact alternative. The Ocean 39 shares design cues with the Rolex Explorer, presenting a more understated and vintage-inspired style. At the same time, the Ocean One, at 42mm, echoes the Submariner with a bolder wrist presence. This distinction helps divers choose the size and style that best fits their needs.

Read also: German vs. Swiss Watches: Which One is the Best for You?

Key Features of the Steinhart Ocean One Collection

For watch enthusiasts looking for reliable dive watches with classic styling, the Steinhart Ocean One and Ocean 39 collections offer a mix of durability, precision, and versatility. Below are some of the key features that make these watches stand out, with examples from specific models.

Case & Material

The cases of Ocean One and Ocean 39 watches are crafted from high-grade stainless steel, providing robustness and resistance to corrosion. As seen in the Ocean One Black and Ocean 39 GMT, the cases feature a brushed finish on the top and polished accents on the sides for a refined look. The screw-in case-back is also brushed stainless steel, complementing the overall design. 

Both collections use sapphire crystal on the front, offering clear visibility of the dial and excellent scratch resistance. Screw-down crowns with the Steinhart logo and unidirectional rotating bezels add both functionality and character. 

Case sizes differ slightly between the collections: Ocean One models generally measure 42mm in diameter, while Ocean 39 models are slightly smaller at 39mm, appealing to those preferring a more modest wrist presence.

Movement

Ocean One models typically house the Swiss-made ETA 2824-2 automatic movement, known for its accuracy, reliability, and 38–42 hour power reserve. Ocean 39 models often feature the Sellita SW200-1 automatic movement, offering similar performance and reliability. 

For limited edition models like the Steinhart Ocean One Phantom Titanium GMT Green, the ETA 2893-2 Elaboré Premium movement provides advanced functionality, including a second time zone adjustable via the GMT hand and bezel. This movement also has 21 jewels, a decorated rotor, and stop-seconds functionality.

Bezel & Dial

Both collections feature unidirectional rotating bezels, crafted from stainless steel or ceramic for durability. The dials are clean and balanced, with luminescent hour markers and hands for easy reading in low-light conditions. As seen in the Ocean 39 Green and Ocean One Black Ceramic, the Mercedes-style hour hand, sword-shaped minute hand, and slim second hand ensure clear time differentiation. 

Dial colors vary from classic black to vibrant blue or green, and the date window at 3 o’clock often includes a magnifying cyclops lens for readability. Limited editions like the Steinhart Ocean One Phantom Green use black DLC-coated titanium cases and SuperLuminova black hands, paired with a GMT hand in green for additional functionality.

Strap

Steel bracelets are the standard for both collections, designed for durability and comfort. The Ocean One Black features high-quality stainless steel links, while the Ocean 39 GMT Blue-Red shows solid end links that integrate seamlessly with the case. Finishes typically mix brushed and polished surfaces to match the case aesthetics. 

For special editions like the Titanium GMT Phantom Green, straps are made from black DLC-coated titanium with a safety deployment clasp, maintaining a lightweight yet robust design.

Water Resistance

Ocean One and Ocean 39 watches are built for water activities, with a standard resistance of up to 300 meters (30 ATM). The Phantom edition takes this further, offering 50 ATM water resistance, making it suitable for professional diving conditions.

Read also: How to Use Dive Watch Bezels: A Simple and Thorough Guide

Explore Steinhart Ocean One Watches Models at Gnomon Watches

Combining Swiss precision, sturdy construction, and classic diver aesthetics, Steinhart dive watches have earned respect among both professional divers and watch lovers. Gnomon Watches presents the Ocean One lineup, highlighting the models that offer the perfect blend of functionality, durability, and underwater-ready design.

1. Steinhart Ocean One Black & Green Ceramic

For watch enthusiasts who value precision, durability, and timeless style, Gnomon Watches presents the Steinhart Ocean One Green & Black Ceramic, a pair of Swiss-made divers that share identical specifications, differing only in bezel color.

Built with a 316L stainless steel case, both models feature a satin brushed finish on the lugs and polished sides, flowing seamlessly into the matching stainless steel bracelet with screw links and fliplock clasp. The case measures 42mm in diameter, 49mm lug-to-lug, and 13mm thick, making it comfortable on most wrists.

Each model sports a scratch-resistant ceramic bezel insert, engraved with white enamel markers and a luminous pip at 12 o’clock for optimal legibility. Thanks to the 120-click unidirectional rotation and deep knurling, bezel adjustments remain precise and secure.

Source: Steinhart Timepieces Official Website

The black dial on both models comes with applied indices and hands coated with SuperLuminova, guaranteeing excellent visibility in low-light environments. A 6.5mm screw-down crown delivers 300m water resistance, while the sapphire crystal with inner anti-reflective coating and date magnifier enhances clarity and practicality.

Powered by the reliable ETA 2824-2 or Sellita SW200 Elaboré automatic movement, the Ocean One Green & Black Ceramic exemplifies robust Swiss engineering. Whether you prefer the classic stealth look of the black bezel or the vibrant touch of green, both variations combine elegance, functionality, and exceptional value in a professional-grade diver’s watch.

2. Steinhart Ocean One Vintage Military

Inspired by classic 1970s British military watches, this diver features a bezel with full markings around the ring, a luminous pip at 12 o’clock, and precise 120-click rotation. The knurled edges provide a secure grip, reflecting the practical design of the original military models.

A satin brushed stainless steel bracelet with screw links and fliplock tapers from 22mm to 18mm, staying true to the proportions of the 1960s model. Its 316L stainless steel case has a satin brushed finish on the top of the lugs and polished sides, flowing onto the bracelet. With a 42mm diameter and 49mm lug-to-lug, it fits comfortably on most wrists.

The Steinhart Ocean One Vintage Military is equipped with a 6.5mm screw-down crown, offering 300m of water resistance. Its matte black dial features printed hour markers and hands coated with old radium-style SuperLuminova for clear readability. The domed sapphire crystal, with an inner anti-reflective coating, protects the dial under varying light conditions.

3. Steinhart Ocean One Titanium 500 Premium

If you’ve ever wanted a diver that’s both tough and surprisingly light, this watch delivers with its satin titanium case, measuring 42mm in diameter, 49mm lug-to-lug, and 13mm thick, weighing 140 grams. The lightweight yet robust construction makes it comfortable for extended wear while maintaining a strong presence on the wrist.

The Steinhart Ocean One Titanium 500 Premium features a domed sapphire crystal with double anti-reflective coating on the interior, surrounded by a unidirectional black ceramic bezel. The bezel’s engraved markings and the black dial’s light blue accents are generously coated with SuperLuminova BGW9, providing clear visibility in low-light conditions.

Inside, the watch houses a Swiss-made ETA 2892-2/SW300 Elaboré Premium movement, decorated with blue screws and a golden Steinhart rotor, visible through the display back. Additional features include a screw-down Steinhart signed crown, a titanium strap measuring 22×18mm with screwed links, and 500m water resistance, making it a high-performance, modern diver’s watch.

4. Steinhart Ocean One Titanium 500 GMT Premium

At the heart of this diver is the Swiss Made SW330-2 Elaboré Premium movement, decorated with blue screws and a golden Steinhart rotor, visible through the sapphire display back. Its precise GMT function and smooth operation make it a reliable choice for travelers and watch enthusiasts alike.

A screw-down Steinhart signed crown ensures 500m water resistance, while the titanium strap, sized 22×18mm with screwed links, provides a secure yet comfortable fit. 

The Steinhart Ocean One Titanium 500 GMT Premium pairs this advanced movement with a satin titanium case that measures 42mm in diameter, 49mm lug-to-lug, and 13mm thick, weighing just 140 grams. 

The black dial is accented with subtle light blue details, framed by a unidirectional black and blue ceramic bezel with SuperLuminova-filled engraved markings for clear readability in any lighting condition.

Together, these features create a modern GMT diver that balances performance, durability, and lightweight wearability for those who appreciate refined craftsmanship.

Conclusion

From robust stainless steel to lightweight titanium, each Steinhart Ocean One model delivers precision, durability, and reliability for serious diving. Whether you prefer the classic black ceramic, the vibrant green, the vintage-inspired military, or the high-performance titanium variants with GMT functions, these watches combine Swiss-made movements with thoughtful design for underwater excellence.

Read also: Steinhart Diver Watch: Ocean Titanium 500 Premium Review