Marking 250 years since 1776, the Marathon U.S. 250 Limited Edition, reference WW194030AN-US250, is a 41mm SSNAV-D Auto limited to 250 pieces, finished in anthracite and filled with American symbolism from dial to caseback.

Every detail on this Steel Navigator with Date Automatic carries meaning. The case and movement are ion-plated in anthracite, a dark, twilight tone. A red tritium tube at 12 stands out from the rest of the dial, and a 1776 appliqué on the dial honors the nation's founding year. The crown is engraved with a star, and the caseback features the Stars and Stripes alongside "In God We Trust." Most notably, this is the first Marathon ever fitted with a sapphire display caseback, so the Swiss Sellita SW200-1 automatic movement, with its anthracite finish, is on view.

The Steel Navigator with Date Automatic was the first Steel Navigator to use a self-winding movement, and it builds on the pilot's watch Marathon developed with Kelly Air Force Base in 1986 for the U.S. Air Force. The SW200-1 has 26 jewels and about 41 hours of reserve. The 11.5mm case uses a screw-down crown for 10 ATM water resistance and a sapphire crystal, and the bi-directional 12-hour bezel tracks a second time zone. Tritium gas tubes illuminate the black dial, with a date at 4:30. For collectors and patriots alike, it is a meaningful way to mark the anniversary.

U.S. 250 Limited Edition WW194030AN-US250: Highlights

• Reference: WW194030AN-US250, limited to 250 pieces
• Case: 41mm, anthracite ion-plated steel, 11.5mm thick
• Movement: Sellita SW200-1 Swiss automatic, anthracite finish, 26 jewels
• Caseback: first Marathon sapphire display caseback, Stars and Stripes and "In God We Trust"
• Crown: screw-down, star-engraved
• Water resistance: 10 ATM
• Dial: black with 1776 appliqué, red tritium tube at 12, date at 4:30
• Bezel and crystal: bi-directional 12-hour bezel; sapphire crystal
• Lug width: 20mm

A once-in-a-lifetime anniversary, captured in 250 Steel Navigators.