Marathon 41mm Cerashell Quartz Pilot's Navigator Watch (CSNAV-D) with Date #WW194013BK-0101

The Marathon Pilot’s Navigator was developed in partnership with Kelly Air Force Base in 1986. The objective then remains today: a pilot’s watch with uncompromising quartz accuracy—capable of withstanding extreme altitude changes.

The case of the newly-issued 41mm NAV is constructed with CeraShell®—Marathon’s proprietary case construction made up of bio-sourced plastic and ceramic powder, with an aluminum bezel.

The CeraShell version of the Navigator has been enhanced with:
Removable spring bars
Radial mounted tritium tube insert, affixed into the bezel pip (improved visibility and protection)
An aluminum bezel to deliver a more tactile rotation
This evolution of the Navigator lightens the mission load while upholding the durability and reliability Navigators are known for.

PURPOSE-BUILT FOR ANY TERRAIN​
With the ETA F06.115 HeavyDrive Quartz movement, the 41mm Navigator with Date (NAV-D) stands out with unmatched precision, featuring accuracy of ± 10s/year. The NAV-D is constructed with bio-sourced plastic and ceramic powder with a screw-down crown and synthetic sapphire crystal, making it operational even when submerged to 6ATM (60m/197ft).

The refreshed case design features enhanced lug tapering, providing a comfortable fit making the NAV-D ideal for all-day wear. The increased height of the 12HR aluminum GMT bezel is specially designed to provide improved grip, allowing pilots to easily handle the bi-directional rotation while wearing flight gloves. The bezel also features inset-painted indices, enhancing the legibility of the markings.

Self-contained tritium gas tubes on the hour markers, the minute/hour hands, and the bezel pip ensure constant visibility in low-light environments. Tritium tubes are self-illuminating, containing an isotope of hydrogen that won't dull down over time like photoluminescent paint, meaning the watch will remain fully legible at all hours.

Protecting the dial of the NAV-D is a highly durable sapphire crystal. This allows the watch to withstand extreme changes in air pressure – necessary for the watch’s use by military pilots at altitudes of over 35,000ft – while also providing scratch resistance and pristine clarity.

The 41mm NAV-D is Swiss-made and Canadian-designed for premium quality and craftsmanship.

The Navigator Pilot Series
Marathon Navigator (NAV) watches were originally developed in partnership with Kelly Air Force Base in 1986. The NAV Series consists of timepieces engineered to stand up to the rigours of high-altitude flight — and even possible ejection from a fighter aircraft. Featuring an iconic asymmetrical case design available in both 316L stainless steel and high-impact composite fibreshell for ultra-light durability, each watch is equipped with a sapphire crystal tolerant of rapid changes in air pressure; a continuously glowing dial; and a bi-directional bezel with the ability to track a second time zone.

Technical information
Movement: ETA F06.115 HeavyDrive Quartz
No of Jewels: 3
Calendar Type: Date
Luminous Features: Tritium Gas Tubes
Crystal Material: Sapphire
Crown Type: Pressure
Case Material: CeraShell®
Case Finish: Parkerized
Bezel Type: Bi-Directional
Bezel Scale: 12 Hour
Submersibility: 6 ATM