When it comes to military gear, the most trusted tools are often the ones that don’t change much — because they got it right the first time. The Marathon OSAR-D, a modern revival of a classic military timepiece, exemplifies this philosophy. Built for precision, toughness, and clarity under pressure, it stands as a testament to function-first design in a world increasingly cluttered by digital distractions.
Originally developed to meet the demanding needs of military search and rescue operations, the OSAR-D (Official Search and Rescue – Diver’s Automatic) watch reflects decades of field-tested design. Now reimagined with thoughtful updates, it’s ready to serve a new generation — professionals, adventurers, and everyday users alike — who demand reliability in every second.
What Makes A True Military Watch?
While many brands borrow aesthetics from military timepieces, few actually build to military standards. The Marathon Watch company has earned its reputation by producing watches that are issued, not just inspired. With contracts to supply NATO forces and ongoing partnerships with government agencies, Marathon doesn’t compromise on materials, precision, or endurance.
The Marathon OSAR-D is no exception. Designed in Canada and made in Switzerland, it blends rugged North American functionality with Swiss watchmaking expertise. Its stainless steel case, tritium gas tube illumination, and high-contrast dial are all rooted in operational requirements, not marketing trends.
This is a watch that doesn’t just look like it’s built for action — it is.
Engineered For The Field
The OSAR-D’s 41mm case strikes a balance between boldness and wearability. It’s big enough for at-a-glance legibility, even under stress, but not so large that it feels out of place on the wrist during daily wear. The brushed finish reduces glare, an essential feature for use in tactical environments or bright outdoor settings.
One of the standout features is the use of tritium tubes rather than traditional lume. These tiny self-powered light sources provide constant illumination — no charging needed — making the watch readable even in total darkness. For search and rescue teams operating in low-light conditions, that reliability is non-negotiable.
Water resistance is rated at 300 meters (1000 feet), more than sufficient for most diving and SAR scenarios. Combined with a screw-down crown and sapphire crystal, the OSAR-D is built to withstand impacts, pressure, and the elements.
Swiss Movement Meets Military Reliability
Inside the Marathon OSAR-D ticks a Swiss-made automatic mechanical movement — a deliberate choice that aligns with the watch’s purpose. Mechanical movements are valued in the field for their durability, autonomy, and predictability. There’s no risk of battery failure in freezing temperatures, no touchscreen to crack or malfunction.
The movement is tuned for accuracy, with hacking seconds (for precise time-setting) and a reliable power reserve. For those used to digital timekeeping, switching to a mechanical watch may feel like a step back. But in truth, it’s a return to something more durable — and less reliant on tech that can fail when you need it most.
The Return Of A Classic
The OSAR-D is not a new invention — it’s a revival. Earlier generations of this watch were trusted companions for military personnel and first responders. The new version honors that legacy while incorporating modern enhancements in materials, construction, and detail.
Collectors and longtime fans will recognize the familiar dial layout, complete with both 12-hour and 24-hour markings. The subtle branding, Arabic numerals, and date window all serve the original mission: quick readability in any situation.
It’s a watch that feels just as appropriate on a tactical vest as it does on a parka in the mountains — or even on a wrist at a desk, for those who simply appreciate equipment that’s built to last.
Everyday Use, Extraordinary Resilience
Although the Marathon OSAR-D was made for hard use, it transitions surprisingly well into civilian life. That’s not because it tries to be stylish — but because practicality never goes out of style.
Its understated appearance, balanced proportions, and undeniable build quality make it suitable for daily wear. It’s the kind of watch you can throw on for a weekend hike, a road trip, or just a long day at work. You know it will perform, no matter what comes your way.
And unlike many watches designed for fashion, the OSAR-D tells a story. It speaks of a legacy in service. Of tools made with intention. And of moments when time is more than a number — it’s something you need to trust.
The return of the Marathon OSAR-D is more than a nostalgic reissue. It’s a reminder of what makes a true military watch: clarity, dependability, and the ability to perform without compromise. In an age when “tactical” has become a buzzword, Marathon continues to build for those who live the mission.
Whether you’re a professional operating in high-stakes environments or simply someone who appreciates gear that’s built with purpose, the Marathon Watch lineup — and the OSAR-D in particular — deserves a place on your wrist.
It’s not about luxury. It’s about legacy. And in the world of serious watches, that might just be the most valuable feature of all.
Daniel is a Cinnamon Hollow author passionate about house and home, renovations, homesteading and DIY.