Marathon 41MM Steel Navigator with Date (SSNAV-D) on 3-Piece Rubber Strap Kit
Marathon 41MM Steel Navigator with Date (SSNAV-D) on 3-Piece Rubber Strap Kit
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Marathon 41mm SSNAV-D Type II - A Rugged and Reliable Pilot Quartz Watch: High Precision with Dual Time Zone Display
Marathon 41mm SSNAV-D Type II (Steel Navigator with Date) is based on the original 1986 Steel Navigator, specifically designed for pilots and parachute instructors. This pilot’s watch features an ETA F06.412 HeavyDrive-PreciDrive quartz movement, offering an accuracy of ±10 seconds per year, with a date window positioned at 4:30. The robust 316L stainless steel case with Parkerized finish, combined with a screw-down crown and sapphire crystal, ensures 10 ATM (100m/330ft) water and shock resistance. The raised 12-hour bidirectional rotating GMT bezel allows for dual time zone tracking, while the durable 3-Piece Rubber Strap Kit ensures comfort and accuracy even during long missions or in harsh environments.
Military-Grade Specifications & Ultimate Precision
- Equipped with the ETA F06.412 HeavyDrive-PreciDrive movement, offering an accuracy of ±10 seconds per year for precise timekeeping during extended missions.
- 316L stainless steel case with Parkerized finish, combining corrosion resistance with a rugged military aesthetic.
- Integrated Tritium gas tube illumination technology provides long-lasting brightness without the need for an external light source.
- 12-hour bidirectional rotating GMT bezel with raised markers for easy operation even with gloves, supporting dual time zone tracking.
- Screw-down crown and reinforced structure ensure 10 ATM (100m/330ft) water resistance, suitable for aerial and ground operations.
Comfortable & Durable Strap Configuration
- Fitted with a 3-Piece Rubber Strap Kit, made from high-quality synthetic rubber, offering water, oil, and aging resistance. It is comfortable to wear and easy to clean and maintain.
- Metal hardware options include stainless steel or Parkerized finish, ensuring stability and durability over time.
- Features enlarged drilled lugs for quick strap changes, adapting to various environments and personal preferences.
Heritage of Excellence: Steel Navigator Upgraded
The Steel Navigator series has been trusted by pilots and military personnel since its debut in 1986. The SSNAV-D retains the iconic asymmetrical case design while introducing enhanced shock protection, advanced water-resistant engineering, and a date function for the first time. Whether in high-altitude flights or ground operations, it delivers outstanding precision and reliability.
Marathon: A Pioneer in Military Timekeeping
Since 1939, the Marathon Watch Company has specialized in designing and manufacturing high-quality military watches, widely used by NATO, the U.S. military, and major law enforcement agencies. Designed in Canada and Swiss-made, the SSNAV-D combines strict military standards with advanced watchmaking craftsmanship, showcasing Marathon’s expertise and heritage in the field of pilot watches.
Technical Specifications
NSN | 6645-01-698-4275 |
Movement | ETA F06.412 HeavyDrive-PreciDrive Quartz |
Jewels | 3 |
Date Function | Date display (4:30 position) |
Illumination | Tritium gas tubes |
Case Material | 316L Stainless Steel (Parkerized Finish) |
Water Resistance | 10 ATM (100m/330ft) |
Crystal Material | Sapphire |
Crown Type | Screw-down crown |
Bezel Type | Bidirectional Rotating (12-hour scale) |
Case Diameter | 41mm |
Case Thickness | 11mm |
Lug-to-Lug | 48mm |
Lug Width | 20mm |







