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Marathon GSAR Specifications
| Reference | WW194006, WW194006-0101 |
|---|---|
| Case Size | 41mm |
| Lug Width | 20mm |
| Lug-to-Lug | 48mm |
| Thickness | 14.5mm |
| Case Material | stainless steel (316L) |
| Crystal | sapphire with anti-reflective coating |
| Water Resistance | 300m |
| Movement | ETA 2824-2 (COSC grade) (automatic) |
| Bezel | unidirectional rotating dive bezel |
| Crown | screw-down |
| Case Back | screw-down |
| Price Range | $1,100-$1,400 |
Compatible Straps for the Marathon GSAR
The GSAR uses a 20mm Lug Width and is compatible with the following strap types.
| Type | Recommended Brand | Why It Works | Price Range | Link |
|---|---|---|---|---|
| NATO/ZULU | Marathon OEM | Classic look, easy to swap, fits 20mm lugs | $15–$80 | |
| rubber/silicone | Barton | Water-resistant, comfortable for daily wear | $15–$80 | |
| leather | Erika's Originals | Dresses up the watch, fits 20mm lugs | $15–$80 | |
| OEM stainless steel bracelet | Maratac | Compatible with 20mm attachment | $15–$80 |
Replacement Parts for the Marathon GSAR
| Part | Description | Compatibility Note |
|---|---|---|
| crystal (sapphire) | Protective cover over the dial | Fits 41mm case |
| bezel insert | Outer ring marking | Matches unidirectional rotating dive bezel configuration |
| crown | Time-setting knob on case side | screw-down type |
| spring bars | Pins that hold the strap to the case | 20mm, 1.5mm diameter recommended |
| case back gasket | Seal that maintains water resistance | Required for 300m WR rating |
| tritium tubes | Replacement component | Check compatibility with GSAR |
Modding the Marathon GSAR
The GSAR is a popular platform for modding. Here are the most common modifications.
- strap swap — Upgrade to a premium aftermarket strap or metal bracelet.
Frequently Asked Questions
What lug width is the Marathon GSAR?
The Marathon GSAR has a 20mm lug width.
Does the GSAR use tritium?
Yes. The GSAR uses self-luminous tritium gas tubes (GTLS) for continuous glow in the dark without needing to be charged by light. The tritium has a half-life of about 12.3 years.
Is the GSAR a real military watch?
Yes. Marathon watches are issued to military personnel of various NATO countries including the US, Canada, and others. The GSAR carries a government NSN (NATO Stock Number) and is built to MIL-SPEC standards.