Automatic watches have their charm, but there is a reason so many professionals reach for quartz. The Marathon TSAR WW194007SS-0111 makes that argument well: a 41mm Swiss quartz diver with a matte black Standard-Issue dial, tritium illumination and a stainless steel bracelet, ready to wear the instant you pick it up.

Consider the ETA F06.115 HeavyDrive at its core. "HeavyDrive" refers to its high-torque design, which turns the larger lume-laden hands of a dive watch with authority. It needs no daily wear to stay running, and when the battery nears the end of its life, an end-of-life indicator warns you in advance. Pair that with tritium, which glows on its own for years, and you have a watch that is always on time and always readable, even if it has been sitting in a gear bag for a month.

The Standard-Issue dial carries no government markings, so the layout stays clean and symmetrical. Combined with the brushed steel bracelet, it gives this Tritium Search and Rescue watch a subdued, professional look that suits a field kit, a desk or a weekend bag equally well.

Technical Overview, WW194007SS-0111

• Watch: Marathon Tritium Search and Rescue (TSAR), 41mm
• Power: Swiss-made ETA F06.115 high-torque quartz, end-of-life indicator
• Dial: matte black, no government markings, 4:30 date
• Light: tritium tubes on indices and hands, MaraGlo seconds and bezel pip
• Case: 316L stainless, approx. 14mm thick, 48mm lug-to-lug
• Rating: 30 ATM (300m)
• Crystal: sapphire; crown: screw-down with guards
• Bezel: unidirectional, 60 minutes, 120 clicks
• Bracelet: brushed stainless steel, 20mm

When the watch that matters most is the one that is already running, this is it.