Opening day at first light, a long glass session, a backcountry trek: reference WW194004DT-0906 is a watch for those moments. Marathon's General Purpose Quartz in desert tan, with a U.S. Government dial and DefStan strap, is a 34mm tritium field watch that stays legible in the low light where outdoor days begin and end.

Tritium tubes on the hour markers and hands glow continuously, so there is no need to charge the lume with a flashlight before heading out. The Swiss ETA F06.115 HeavyDrive quartz movement keeps accurate time without winding, and its end-of-life indicator lets you know when the battery is due before a trip rather than in the middle of one. The desert tan fibreshell composite case is light, quiet against gear and blends with natural surroundings, while sapphire crystal stands up to brush and rock.

The black dial carries the "U.S. Government" marking, with government markings on the caseback, signifying a watch made to MIL-PRF-46374G, Type I, Class 1. Its 12- and 24-hour scales help with schedules that run on military time. A DefStan nylon strap holds it securely through a full day of use.

Specs: Marathon GPQ WW194004DT-0906

• General Purpose Quartz with U.S. Government dial
• 34mm desert tan composite fibreshell case, 11.5mm high
• Swiss ETA F06.115 HeavyDrive high-torque quartz, end-of-life indicator
• 3 ATM water resistance
• Sapphire crystal; pressure crown
• Tritium illumination, markers and hands
• DefStan nylon strap, 16mm lug width

Ready before sunrise and still glowing after sunset.