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Eco-Drive Promaster Dive Watch
- 41 mm
- 200 m WR
- Solar quartz
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41mm Steel Navigator Automatic (SSNAV Auto) on Nylon DEFSTAN
The Marathon 41mm Steel Navigator Automatic (SSNAV Auto) on Nylon DEFSTAN is a 41 mm, 100 m water-resistant automatic pilot watch with a sapphire crystal.
- Case
- 41 mm
- Water
- 100 m (328 ft)
- Movement
- Automatic
- Thickness
- 11.5 mm
Image not availableColor not published
Full specs
Last verified Oct 5, 2026
Unless marked otherwise, specs are from the manufacturer’s product page (marathonwatch.com).
| Case diameter | 41 mm |
|---|---|
| Thickness | 11.5 mm |
| Lug to lug | 48 mm |
| Lug width | 20 mm |
| Case | Stainless steel |
| Crystal | Sapphire |
| Strap | Black DEFSTAN nylon strap |
| Water resistance | 100 m (328 ft) |
|---|---|
| Shock resistant | Yes |
| Movement | Automatic |
|---|---|
| Caliber | Sellita SW200-1 |
| Display | Analog |
| Style | Pilot |
| Luminous hands/markers | Yes |
| Rotating bezel | Yes |
| Date | No |
| Built for | Everyday carry |
|---|---|
| Warranty | 2-year international warranty, plus 1 extra year with online registration (3 years total) |
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