Built for operators who work after dark and need a watch that will not give them away, the Marathon 46mm Anthracite JDD, reference WW194021BK-0130, wraps the Jumbo Day/Date diver in black ion-plated armor and pairs it with a 3-piece rubber strap kit with anthracite hardware.

Marathon issued its first Anthracite SAR in 2018 for stealth during tactical night missions. The black ion-plating on the 316L stainless steel case and bezel is anti-reflective, so it will not flash in a beam of light, and the treatment extends to the movement as well. The 46mm Jumbo size was added to the lineup to suit larger wrists, and it brings a commanding, easy-to-read dial along with it. The rubber strap's anthracite buckle and keepers keep the blacked-out theme consistent from end to end.

This is a full-specification Swiss automatic dive watch. The Sellita SW220 day-date automatic movement has 26 jewels, Incabloc shock protection and roughly 41 hours of power reserve. A screw-down crown with guards secures 30 ATM (300m) of water resistance. The oversized unidirectional 60-minute bezel clicks through 120 positions and is easy to grip with gloves. Tritium gas tubes illuminate the markers and hands, a MaraGlo pip marks the bezel, and a domed sapphire crystal tops a bilingual English/French day wheel.

Anthracite JDD WW194021BK-0130 Specifications

• Reference: WW194021BK-0130
• Case: 46mm 316L steel with black ion-plating, 18mm thick, 55mm lug to lug
• Movement: Sellita SW220 Swiss automatic, 26 jewels, about 41-hour reserve
• Water resistance: 30 ATM / 300m
• Crystal: domed sapphire
• Bezel: unidirectional 60-minute, 120 clicks
• Lume: tritium gas tubes plus MaraGlo bezel pip
• Dial: black, Standard-Issue, bilingual day and date
• Strap: black 3-piece rubber kit with anthracite hardware, 22mm lugs

Big, black and built for the night shift.