Pick up the Marathon GPQ, reference WW194004BK-0808, and the first thing you notice is how little it weighs. The black composite fibreshell case keeps this 34mm Swiss quartz field watch so light that you can wear it on a long-haul flight, through a night's sleep or under a work glove without a second thought.

The fibreshell composite does not conduct heat or cold the way steel does, so it stays comfortable in winter and summer alike, and the 11.5mm case height keeps it from snagging. This listing pairs the case with a black DefStan nylon strap, a British-pattern military strap that holds the watch securely and adds almost no weight. The dial is sterile, without government markings or insignia, and features 12- and 24-hour scales plus tritium tubes on the hands and markers for constant illumination.

Power comes from the Swiss ETA F06.115 HeavyDrive, a high-torque quartz movement with an end-of-life indicator that signals when the battery needs replacing. Marathon makes the GPQ to MIL-PRF-46374G, Type I, Class 1, and fits a sapphire crystal for scratch resistance. It is a dependable companion for travelers, shift workers and anyone who wants a watch that simply works.

Marathon GPQ Sterile DefStan at a Glance

• Reference WW194004BK-0808
• 34mm black fibreshell composite case, 11.5mm thick
• Swiss ETA F06.115 HeavyDrive quartz, end-of-life indicator
• 3 ATM water resistance
• Sapphire crystal, pressure crown
• Tritium lume on hands and indices
• Sterile black dial, 12/24-hour scales
• Black DefStan nylon strap, 16mm lugs

The watch you put on and stop thinking about.