Collectors who already know Marathon's black OSAR-D often find themselves eyeing its brighter sibling. The Marathon 36mm OSAR-D Arctic Edition, reference WW194026SS-2506, is that white-dial counterpart: a Swiss automatic dive watch on a stainless steel bracelet that changes the watch's whole personality while keeping its toolkit.

Pair the two and you have a dark-dial and light-dial rotation that covers nearly every mood and outfit. Even on its own, the Arctic version stands out in a collection of mostly black divers. The white face shows off the OSAR-D's large geometric indices and broad hands, the cyclops-magnified date at 3 o'clock and the MaraGlo bezel pip with an almost graphic clarity. Marathon introduced the Arctic OSAR-D in 2025, a year after relaunching the Original Search and Rescue with Date, which itself evolved from the SAR-D worn by Canadian SAR Techs.

The OSAR-D is Swiss-made and Canadian-designed, assembled in La Chaux-de-Fonds by a family company founded in 1904. Its credentials are real: a brushed 316L steel case, sapphire crystal, a screw-down crown protected by guards, a 120-click bezel and 300 meters of water resistance, with a Sellita SW200-1 automatic movement inside. The 36mm size makes it an appealing option for collectors who prefer classic proportions.

Collector's Notes: Marathon WW194026SS-2506

• Edition: 36mm OSAR-D Arctic, white Type I dial
• Case: 36mm stainless steel, 13mm thick, 43.5mm lug to lug
• Movement: Swiss Sellita SW200-1 automatic, Incabloc shock protection
• Water resistance: 300 meters
• Crystal: sapphire, cyclops-magnified date at 3
• Lume: MaraGlo on indices, hands and pip
• Bezel: unidirectional, 60-minute scale
• Bracelet: stainless steel, 18mm

The bright half of a very satisfying pair.