Few modern dive watches have a service record like Marathon's GSAR. Reference WW194006SS-0009 is the 41mm Large Diver's Automatic in brushed 316L stainless steel with a black dial and a steel bracelet, the same Government Search and Rescue design that has been issued to the U.S. Marine Corps.

The story starts long before the GSAR. Marathon, a family-owned company founded in 1904, took its first military order from the Royal Canadian Air Force in 1941 and supplied field watches to Allied forces through World War II. Decades later, its search and rescue line was developed to meet Canadian Government requirements, and the GSAR became the most storied model in that family. Its formula is uncompromising: a 300-meter case with a screw-down crown and crown guards, a sapphire crystal, a unidirectional 60-minute bezel with 120 clicks, and tritium gas tubes on every marker and hand for constant, self-powered visibility.

Inside is the Swiss Sellita SW200-1 automatic with 26 jewels and Incabloc shock protection. On the stainless steel bracelet, this GSAR has the solid, all-metal feel that suits a watch with this kind of lineage.

Marathon GSAR WW194006SS-0009 at a Glance

• Reference: WW194006SS-0009
• Case: 41mm brushed 316L stainless steel, approx. 14mm thick, 48mm lug to lug
• Movement: Sellita SW200-1 Swiss automatic, 26 jewels, about 41 hours of reserve
• Water resistance: 30 ATM / 300m / 1000ft
• Crystal: scratch-resistant sapphire
• Lume: tritium on markers and hands, MaraGlo on the bezel pip
• Bezel and crown: 120-click unidirectional bezel; screw-down crown with guards
• Dial: black, date at 4:30, 24-hour inner scale
• Bracelet: stainless steel, 20mm lug width

A piece of living military history that is ready to be worn hard.