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A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11The Marathon OSAR-D is a 2024 remake of the SAR-D, a watch Marathon says it issued to Canadian search-and-rescue technicians in the early 2000s. The company says the update brings improved MaraGlo illumination, larger indices and a clearer magnified date window. The current family comes in 36, 41 and 46 mm cases, with different movements and fit dimensions by size.
What is the Marathon OSAR-D?
OSAR-D stands for “Original Search and Rescue with Date.” Marathon describes it as a refreshed version of its SAR-D, whose original 41 mm model, the company says, was issued to Canadian SAR technicians in the early 2000s. That history is Marathon’s account; it does not establish that every modern OSAR-D is issued equipment or holds a specific military contract. Marathon’s OSAR-D family page says its SAR watches were developed to Canadian Government requirements for professional SAR operations and that the broader SAR series has been used by Canadian and U.S. military members.
Marathon dates the OSAR-D launch to 2024. The company’s president, Mitchell Wein, described it at launch as a watch that “builds upon the legendary performance of the original SAR-D.” That is the manufacturer’s characterization, not an independent performance finding. The launch announcement gives the company’s account of the release.
What changed from the SAR-D?
Marathon identifies three principal updates: improved MaraGlo illumination, larger indices and improved clarity through the cyclops date magnifier. The family also now spans 36, 41 and 46 mm case options. Since the sizes do not all use the same movement or have the same dimensions, the choice is more than a matter of dial scale.
#1 Best Overall
- Submersibility: 30 ATM
- Bezel Scale: 60 Minute
- Bezel Type: Uni-Directional
- Case Finish: Brushed
- Case Material: 316L Stainless Steel
- Illumination: Marathon says the OSAR-D has upgraded MaraGlo illumination. Its broader SAR-series description mentions tritium tubes and MaraGlo, but the OSAR-D listings emphasize MaraGlo; that should not be taken to mean every illuminated marker on every OSAR-D dial is a tritium tube.
- Dial and date: The company cites larger indices and better clarity in the magnified date window.
- Size and movement: The 36 and 41 mm listings specify Sellita SW200-1 movements; the 46 mm listing specifies a Sellita SW600 b and a 62-hour power reserve.
These are manufacturer-published changes and specifications. They are not the results of an independent timing, lume, water-resistance or wear test.
How do the 36, 41 and 46 mm versions compare?
| Variant | Published dimensions and fit | Movement and other listed details |
|---|---|---|
| 36 mm | 36 mm case; 13 mm thick; 43.5 mm lug-to-lug; 18 mm lug width | Sellita SW200-1, 26 jewels; listed at 30 ATM |
| 41 mm | 41 mm case; 20 mm lug width on the bracelet listing | Sellita SW200-1; listed at 30 ATM |
| 46 mm | 46 mm case; 17 mm thick; 55 mm lug-to-lug; 22 mm lug width | Sellita SW600 b, 24 jewels; Marathon states a 62-hour reserve; listed at 30 ATM |
The dimensions and movements above are from Marathon’s listings: 36 mm OSAR-D, OSAR-D family page, 41 mm OSAR-D with bracelet and 46 mm OSAR-D. The listed 46 mm lug-to-lug span of 55 mm is the longest published fit dimension in this comparison; for a smaller wrist, the 36 mm version’s 43.5 mm lug-to-lug measurement may be a more useful starting point than case diameter alone. Wrist shape and preference still affect how a watch wears.
Rank #2
- Watch Movement: Sellita SW200-1 with Incabloc Shock Protection
- Number of Jewels: 26
- Date Display: Magnified 1.5x
- Luminescence: MaraGlo for Visibility
- Crystal: Sapphire for Durability
Choosing by wrist fit and strap
Case diameter alone does not tell the whole fit story: thickness and lug-to-lug length matter too. The 36 mm listing provides all three dimensions, while the cited 41 mm bracelet listing specifies its 20 mm lug width but not thickness or lug-to-lug length. The 46 mm listing is 17 mm thick and 55 mm lug-to-lug, so it is the largest and thickest of the three variants with complete published dimensions here.
Match a replacement strap to the lug width for the exact size: Marathon lists 18 mm for the 36 mm model and 20 mm for the 41 mm bracelet listing. The 46 mm listing gives a 22 mm lug width. Confirm the product page and strap fit for the specific watch before ordering; listings can vary by configuration.
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Rank #3
- Power: Sellita SW200-1 with Incabloc Shock Protection
- Gear Count: 26
- Date Display: Magnified Date Window
- Glow: MaraGlo Illumination
- Crystal: Sapphire Glass
Movement and power reserve
The 36 and 41 mm versions use the Sellita SW200-1, while the 46 mm uses the Sellita SW600 b. Marathon states a 62-hour reserve for the 46 mm version; the cited listings do not state a comparable reserve figure for the 36 or 41 mm models. Choose between them based on the size and movement distinction rather than assuming the reserve figure applies across the family.
What do the illumination and dive specifications mean?
The 36 mm product listing specifies MaraGlo, a date with 1.5× magnification, sapphire crystal, a screw-down crown, a unidirectional 60-minute bezel, brushed 316L stainless steel and 30 ATM submersibility. Marathon lists 30 ATM for the family variants. These are maker-published specifications, not independently measured results in this article; a water-resistance rating is not a report of a test performed on an individual watch.
Rank #4
- Submersibility: 30 ATM
- Bezel Scale: 60 Minute
- Bezel Type: Uni-Directional
- Case Finish: Brushed
- Crystal Material: Sapphire
Marathon’s family page attributes the statement “WORKS EXTREMELY WELL AS A DIVE WATCH AND AS A TOOL” to Navy Diver Brock Stevens. It is a named wearer’s testimonial, not a substitute for independent testing or a guarantee of performance for every wearer.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Which OSAR-D size should you choose?
- Consider the 36 mm if you want the smallest listed case and value its published 43.5 mm lug-to-lug length. Its 18 mm lug width also makes the appropriate replacement strap size clear.
- Consider the 41 mm if you want the middle case option and the SW200-1 movement. Check the exact bracelet or strap configuration for its fit details; the cited bracelet listing gives a 20 mm lug width.
- Consider the 46 mm if you prefer the largest case, want the SW600 b, or value Marathon’s stated 62-hour reserve. Its 55 mm lug-to-lug measurement and 17 mm thickness are important fit considerations.
Marathon lists standard and Arctic dial options, but selection can vary by size and stock. Prices and availability can also change, so verify the live listing for the exact configuration before buying.
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Best Value
- Gray Build: A 38mm gray resin case pairs with an adjustable 16mm strap for secure, everyday training wear day after day, year after year
- Serious Performance: A 100-hour chronograph with 30-lap memory and a 24-hour countdown timer support training days, while three customizable alarms keep you on schedule
- Stay on Schedule: Two time zones and a full day, date and month calendar keep every plan on track wherever the day takes you
- Night-Ready Visibility: An acrylic lens and INDIGLO backlight keep the digital display easy to read after dark, day or night
- Built to Last: A Timex watch is designed for durability and everyday reliability; every piece reflects our commitment to quality without compromise
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
