In the world of professional tool watches, few names command as much respect as Marathon. Built to meet military specifications, the Marathon TSAR quartz diver ISO 6425 SAR ops watch is not just a timepiece—it’s a professional instrument designed for Search and Rescue (SAR) operations, military divers, and professionals who depend on absolute reliability in life-or-death environments.
The 41mm TSAR (Tritium Search and Rescue) model combines Swiss craftsmanship, tritium illumination, and ISO-certified dive performance. In 2025, it continues to stand tall as one of the toughest quartz dive watches you can buy.
A Watch Built for Search and Rescue
Marathon has been producing watches for allied forces since the 1940s, and the TSAR is a continuation of that military heritage. The 41mm Quartz TSAR Diver’s Watch is purpose-built for SAR operations—where timing, visibility, and durability can mean the difference between success and failure.
This is not a lifestyle dive watch. It’s an issued-grade tool, designed for use in the harshest underwater and field conditions.
Key Features of the Marathon TSAR 41mm Quartz Diver
Here’s what makes the TSAR such a trusted professional tool:
- ISO 6425 Certified – Officially tested and certified as a true dive watch.
- Swiss-Made Quartz Movement – High-accuracy ETA F06 quartz movement with three jewels.
- 41mm Case Size – Compact and versatile, with 20mm lug width.
- 316L Stainless Steel Case – Rugged and corrosion-resistant for harsh saltwater use.
- Sapphire Crystal – Scratch-resistant, anti-reflective coated sapphire for maximum durability.
- Water Resistance: 300m / 1000ft – Professional-grade depth rating.
- Unidirectional Rotating Bezel – 60-minute dive timer for mission-critical timing.
- Tritium Gas Tubes + MaraGlo® – Constant low-level glow for 24/7 visibility, no external charging required.
- Date Function – Simple date window for added utility.
Specifications at a Glance
- Model: Marathon 41mm TSAR Quartz Diver’s (Ref. WW194007)
- Movement: ETA F06 High-Torque Quartz, 3 jewels
- Case Diameter: 41mm
- Case Thickness: ~13.85mm
- Lug Width: 20mm
- Crystal: Sapphire, AR-coated
- Water Resistance: 300m (ISO 6425 certified)
- Illumination: Tritium gas tubes on hands and hour markers, MaraGlo® on bezel pip
- Bezel: 120-click unidirectional
- Crown: Screw-down, 5mm diameter
- Weight: ~93g (on rubber strap)
Every element of this watch is about functionality and toughness, with no unnecessary extras.
Who Is the TSAR For?
The Marathon TSAR quartz diver ISO 6425 SAR ops watch is made for professionals who need a dependable dive instrument:
- Military divers requiring ISO-certified precision and constant illumination.
- Search and Rescue teams working in low-light and high-pressure environments.
- Commercial divers who need reliability without worrying about battery-dependent displays.
- Adventurers and tool-watch enthusiasts who value military-spec gear.
Unlike many dive watches marketed as lifestyle accessories, the TSAR is a mission-ready instrument, purpose-built for professionals.
Why Quartz for a Professional Diver?
Some may ask why a professional watch like the TSAR uses quartz instead of automatic movement. The answer is reliability and accuracy under stress.
- High Accuracy – The ETA quartz movement ensures precise timekeeping without drift.
- Shock Resistant – Quartz movements are more resistant to shock compared to mechanical.
- Low Maintenance – No need for frequent servicing; battery life typically lasts several years.
- Mission-Ready – Professionals can’t afford failure in SAR ops—the quartz TSAR delivers uncompromising dependability.
For Marathon, it’s all about building the right tool for the job.
Pricing & Availability in 2025
As of 2025, the Marathon TSAR 41mm Quartz Diver remains widely available through:
- Marathon’s official website
- Authorized military and dive watch retailers
- Select online watch dealers
The price typically falls in the $900 – $1,200 USD range, depending on the strap or bracelet configuration. Considering its Swiss-made quality, ISO dive certification, and tritium illumination, it represents excellent value for a professional-grade SAR ops watch.
Why It’s Still Relevant in 2025
The TSAR’s design hasn’t changed much over the years, and that’s exactly the point. It’s a proven platform trusted by professionals worldwide. In 2025, while smartwatches dominate the consumer market, the TSAR remains timeless because:
- It doesn’t rely on charging.
- It’s built to military standards.
- It offers unmatched legibility in darkness thanks to tritium tubes.
- It’s ISO 6425 certified for real diving—not just marketing.
For those who want a tool they can trust in the most extreme environments, the TSAR is still one of the most dependable quartz dive watches available.
Final Verdict
The Marathon TSAR quartz diver ISO 6425 SAR ops watch isn’t about fashion or trends—it’s about survival, reliability, and professional-grade performance. With Swiss-made construction, tritium illumination, 300m water resistance, and military-spec durability, it remains one of the most respected dive watches in 2025.
If you’re looking for a watch that can handle real-world SAR ops, deep diving, or just daily adventures with military toughness, the 41mm TSAR Quartz is one of the best professional tools you can put on your wrist.
In short: a true dive instrument, built for those who demand the absolute best in reliability.
