MARATHON Blue Yonder SSNAV-D Steel Navigator Quartz WW194013SS

Origin and purpose

The GSAR, short for Government Search and Rescue, is the most traditional watch in its class and was developed from the start as a true mission instrument. Its DNA contains the demand for maximum reliability under extreme conditions; the design is therefore never fashionable but always functional and purpose-driven.

Mechanics with tradition

Inside works the proven mechanical automatic movement ETA Valjoux 7750, a caliber that has stood for decades in professional chronographs. With 25 jewels, Incabloc shock protection, and about 28,800 vibrations per hour, it offers a solid technical foundation combining precision and robustness.

Power reserves and drive

Despite its chronograph complexity, the movement delivers up to 48 hours of power reserve, providing reliable autonomy in everyday use and missions. The direct, mechanical operation of the stopwatch functions also conveys an immediate sense of technology and control — something digital solutions do not equally offer.

Robustness and protection

The case made of brushed 316L stainless steel is deliberately designed for durability; a screw-down crown, a double-domed sapphire crystal, and water resistance up to 30 ATM / 300 m show: this watch is built to withstand, not to shine. The unidirectional bezel with 120 clicks features a MaraGlo-illuminated marker that provides immediate orientation during critical timing.

Readability around the clock

The GSAR thrives on its readability: indexes as well as hour, minute, and second hands are equipped with self-luminous tritium tubes and provide consistent brightness even in complete darkness. This is complemented by well-proportioned displays that make reading the time and stopwatch values intuitive.

Chronograph functions

As a chronograph, the watch offers all relevant tools: a small seconds at 9 o'clock, a 30-minute counter at 12 o'clock, and a 12-hour counter at 6 o'clock, complemented by a day-date display at 3 o'clock. This classic layout is practical and allows simultaneous tracking of multiple time intervals without confusion.

Dimensions and presence

With a diameter of 46 mm, a lug-to-lug length of 55 mm, and a case height of 17.5 mm, the GSAR has an impressive presence on the wrist; it deliberately appears robust, with generous proportions benefiting readability and operability. The 22 mm lug width ensures a secure fit and harmonious appearance.

Wearing comfort and options

Despite its size, the watch remains wearable: those who want a sporty look choose the black Marathon rubber strap with a solid pin buckle made of 316L stainless steel; those who prefer more elegant robustness opt for the Marathon stainless steel bracelet with folding clasp. Both variants are designed for durability and complement the GSAR as a true instrument for use.

Conclusion — tool with soul

The GSAR is not a statement watch, but a tool with character: mechanical substance, uncompromising legibility, and true diving capability make it the choice for professionals and those who seek a watch that remains reliable under pressure. Anyone who wants a watch to use, not to pamper, makes a very clear decision here.

Specifications

• Automatic movement (mechanical self-winding), made in Switzerland
• Movement manufacturer: ETA SA Manufacture Horlogère Suisse, Grenchen, CH
• Movement version: ETA Valjoux 7750 ·
• 25 jewels
• Incabloc shock protection
• 48 hours max. power reserve
• 28,800 semi-oscillations/h
• Brushed 316L stainless steel
• Water resistant 30 ATM / 300m
• Unidirectional rotating 60-minute bezel, 120 clicks
• MaraGlo illumination of the bezel marker
• Screw-down crown
• Scratch-resistant sapphire crystal
• Diameter: 46 mm
• Length over lugs: 55 mm
• Height: 17.5 mm
• Lug width: 22 mm
• Chronograph
• Small seconds at 9 o'clock
• 30-minute counter at 12 o'clock
• 12-hour counter at 6 o'clock
• Day-date display at 3 o'clock
• Indexes with self-illuminating tritium tubes
• Hour, minute, and second hands with self-illuminating tritium tubes
• Choose your strap below
• Black Marathon rubber strap including pin buckle made of 316L stainless steel
• Marathon stainless steel bracelet with folding clasp