When a dive watch needs to disappear in the dark, Marathon reaches for anthracite. The Marathon 41mm Anthracite GSAR, reference WW194006BK-0009, takes the Government Search and Rescue diver best known for its service with the U.S. Marine Corps and dresses it in a black ion-plated case and bezel, paired here with a matching black stainless steel bracelet. It is a Swiss automatic dive watch built for low-visibility work, and it looks the part.

The anthracite finish is functional before it is fashionable. Ion plating cuts the reflections that could give away a position during night operations, which is the whole point of Marathon's stealth SAR models. Under the blacked-out exterior sits the same hardware that made the GSAR the most storied model in the SAR family: a Sellita SW200-1 automatic movement with Incabloc shock protection, a 300-meter case built to Canadian Government search and rescue requirements, and tritium gas tubes on every hour marker and hand that glow continuously for years without ever needing a charge.

The black bracelet keeps the look monochrome from lug to clasp, making this the version for anyone who wants the full stealth treatment rather than a dark case on bright steel. It has real presence on the wrist while staying compact enough at 41mm for daily duty.

Marathon Anthracite GSAR WW194006BK-0009 at a Glance

• Reference: WW194006BK-0009
• Case: 41mm black ion-plated stainless steel, about 14mm thick, 48mm lug to lug
• Movement: Swiss Sellita SW200-1 automatic, 26 jewels, roughly 41-hour reserve
• Water resistance: 300m / 30 ATM / 1000ft with screw-down crown and crown guards
• Crystal: sapphire
• Lume: tritium gas tubes on hour markers and all hands; MaraGlo bezel pip
• Bezel: black unidirectional 60-minute bezel, 120 clicks, oversized for gloved hands
• Dial: black with date at 4:30 and 24-hour inner scale
• Bracelet: black stainless steel, 20mm lugs

Swiss-made, Canadian-designed, and finished for the night shift.