It looks like a dive watch. It withstands water pressure up to 200 meters. And it features details usually found only in professional timepieces. But officially, the new Marus 2.0 from Sternglas is not considered a dive watch. This article explores why that is and what still makes it a remarkable piece.
What is a dive watch and why can't every watch be called one?
The term "dive watch" is protected. Only watches that have been tested according to specific technical standards may officially carry that label. These include standards like ISO 6425 or the German DIN 8306. Requirements include shock resistance, saltwater protection, magnetic field resistance, and reliable legibility at depth.
The Marus 2.0 meets many of these criteria, but it has not been certified under ISO standards. That’s why Sternglas intentionally refers to it as an automatic watch with dive-inspired design. And for good reason. It offers features that prove themselves in everyday life just as much as they do around water.
What is the rotating bezel actually used for?
The bezel is a key design feature of the Marus 2.0. Its origin lies in the world of diving, where it is used to monitor elapsed dive time. Before descending, the zero marker is aligned with the minute hand. When resurfacing, it shows exactly how many minutes have passed.
In everyday life, the bezel can be used in much the same way. If you prefer not to use a digital stopwatch, simply rotate it to track time while cooking, exercising, or parking. The Marus 2.0 features a particularly easy-to-grip unidirectional bezel with a 60-minute scale. Functional, durable, and easy to operate.
Luminova: How the Marus 2.0 stays easy to read in the dark
The Marus 2.0 uses modern Super-LumiNova on its hands, indices, and bezel. This luminous material stores light and releases it in the dark. Unlike older watches, it contains no radioactive substances. The luminescence is completely safe and highly durable.
Sternglas uses two different shades of Luminova in this model, making it easy to distinguish between the hour, minute, and bezel markings even in low-light conditions. This improves legibility and makes the watch a reliable companion, day or night.
Seiko NH35 Automatic Movement: Trusted mechanics inside
Inside the Marus 2.0 beats the Seiko NH35 automatic movement. It is one of the most widely used calibers in the world and is known for its durability, accuracy, and ease of maintenance. The watch winds itself with every movement of the wrist, so no battery is needed.
A larger date window at six o'clock improves legibility. The frequency of 21,600 vibrations per hour ensures a smooth sweep of the second hand. Anyone who appreciates mechanical watches will feel right at home here.
What 20 bar water resistance means for everyday use
The dial of the Marus 2.0 reads 20 bar. Many associate this with a water depth of 200 meters, but the number actually refers to the pressure the watch can withstand under lab conditions. Testing is done in a controlled environment with constant pressure, no movement, no temperature shifts, and no external impact.
In everyday life, 20 bar water resistance means the watch is well protected against water. It is perfectly suited for showering, swimming, snorkeling, and water sports. Even jumps into the pool or strong arm movements are no issue.
The Marus 2.0 features a screw-down crown, double gaskets, and a screw-in case back. This construction reliably protects the movement from moisture. It is ideal for everyday use in and around water, but not intended for professional diving.
Two Designs, Two Looks: Black or Green-Bronze?
The Marus 2.0 comes in two versions. The first features a black dial with clean Bauhaus-inspired accents, giving it a functional, modern, and precise look. The second pairs a deep green dial with a case in bronze finish. Its warm tone evokes the charm of classic dive watches from the 1950s.
Quick-Change Straps for Every Style and Occasion
The strap can be swapped in seconds. Whether rubber, metal, field, or the new hybrid strap made from calfskin and silicone, the quick-release system allows for tool-free changes. This makes the Marus 2.0 adaptable to any situation. Sporty, refined, or practical – whatever the day calls for.
The Whale on the Case Back
A detail rich in symbolism. The screw-down case back of the Marus 2.0 features an engraved whale. It represents calm, endurance, and strength. At the same time, the motif highlights the maritime character of the watch. The engraving is executed with precision and reflects the attention to detail Sternglas is known for.
By definition, the Marus 2.0 is not a certified dive watch. But it is a well-designed, everyday-ready automatic timepiece with classic dive watch aesthetics. Water-resistant up to 200 meters, equipped with quality mechanics, comfortable to wear, and visually striking. Perfect for anyone looking for a watch that does more than just tell the time.
