Pack light, travel far. The Marathon MaraGlo NAV-D, reference WW194013BK-2102, is one of the lightest watches in the Marathon range, a 41mm composite-cased pilot's watch with date, MaraGlo lume and a black DefStan nylon strap.

The Navigator was created with Kelly Air Force Base in 1986 for U.S. Air Force pilots, and its bi-directional 12-hour bezel remains one of the most practical travel tools on any watch. Set the bezel to your home hour before you fly, and you will always know what time it is back there. The date at 4:30 helps when the days start blurring across time zones, and the composite case means the watch never becomes a burden on long trips.

This version uses MaraGlo, Marathon's photoluminescent lume, in place of tritium. A short exposure to sunlight or a reading lamp charges it, and it continues to glow for several hours, enough for an overnight flight or a late arrival. The black dial carries no government markings. Power comes from a Swiss ETA F06.115 HeavyDrive quartz movement, and the black DefStan nylon strap is fitted with steel hardware, giving the watch a clean, functional look in an airport lounge or out on the trail.

Marathon WW194013BK-2102 at a Glance

• Model: MaraGlo Pilot's Navigator with Date (NAV-D)
• Reference: WW194013BK-2102
• Case: lightweight composite, 41mm, 11mm
• Movement: ETA F06.115 HeavyDrive quartz, Swiss
• Water resistance: 6 ATM
• Crystal: sapphire
• Lume: MaraGlo on dial and hands
• Bezel and date: bi-directional 12-hour bezel; date at 4:30
• Strap: black DefStan nylon, 20mm lugs

A lightweight travel watch that keeps two time zones and a date in plain view.