The Marathon MSAR WW194027SS-0506 is the dive watch that wears like a dress watch when you need it to. With a 36mm steel case only 12.5mm thick, an Arctic white Standard-Issue dial and a stainless steel bracelet, this Medium Search and Rescue quartz model slides under a shirt cuff with ease, then heads straight to the pool afterward.

A compact diver with a white dial is one of the most adaptable watches you can own. The lighter face reads as cleaner and more formal than black, which makes the MSAR a sensible choice for the office, a wedding or a dinner reservation, yet it remains a true 300-meter diver with a screw-down crown, guards and an oversized unidirectional bezel. Tritium gas tubes on the hour markers and hands provide constant low-light legibility, and MaraGlo lights the bezel pip and seconds hand.

The bracelet's brushed finish matches the case for a cohesive, low-key look that doesn't shout. Inside, the Swiss ETA F06.115 HeavyDrive quartz movement keeps it accurate with no maintenance beyond the occasional battery, flagged in advance by an end-of-life indicator. The Standard-Issue dial has no government markings to break up its clean design.

WW194027SS-0506: Technical Overview

• Marathon 36mm Medium Search and Rescue (MSAR) quartz
• Slim 12.5mm 316L stainless steel case
• Arctic white Standard-Issue dial, 4:30 date
• Swiss ETA F06.115 HeavyDrive
• 300 meters water resistance
• Sapphire crystal, screw-down crown
• Tritium hands and indices, MaraGlo seconds and pip
• Steel bracelet, 18mm lugs

Under the cuff by day, in the water by evening.