Born from the demands of Canadian police work, the Marathon JSAR WW194018SS-0104 is a 46mm Swiss quartz dive watch with real authority. The Jumbo Search and Rescue was developed for provincial police services throughout Canada, and this reference presents it with a black dial on a stainless steel bracelet.

Police and rescue units need gear that works in every season, from spring floods to frozen lakes, and the JSAR reflects that. Its case is large, legible and rated to 300 meters. Its bezel is oversized and unidirectional so it can be operated with gloves and can never accidentally extend a planned dive. Its crown screws down behind guards that protect it from impacts. And rather than a delicate mechanical movement, it relies on Swiss ETA F07.115 HeavyDrive quartz, a high-torque caliber with an end-of-life battery indicator that warns well before a battery change is due.

The dial and hands are lit with MaraGlo, Marathon's photoluminescent lume, which charges from any light and glows for hours afterward. On the steel bracelet, the 46mm case has the solidity you would expect from a watch issued for duty, and the 22mm lug width gives it a proportionate, substantial look.

Marathon JSAR WW194018SS-0104 at a Glance

• Model: 46mm Jumbo Diver's Quartz (JSAR), also known as Le Grand Plongeur
• Movement: Swiss ETA F07.115 HeavyDrive quartz, end-of-life indicator
• Case: 316L stainless steel, about 17.5mm thick, 55mm lug to lug
• Water resistance: 30 ATM / 300m
• Crystal: sapphire
• Lume: MaraGlo
• Dial: black, date at 4:30
• Bezel and crown: 120-click unidirectional bezel; screw-down crown with guards
• Bracelet: stainless steel, 22mm lugs

Proven on patrol, ready for your own daily beat.