Marathon Diver's GSAR Arctic Edition Reference #: WW194006SS-0513

• Case: 41mm diameter, 14mm thickness, and 48mm lug-to-lug distance. Constructed from 316L surgical-grade stainless steel with a fully brushed finish. 

• Dial: Snow-white dial with dual-scale Arabic numerals (1–12 and 13–24) to reduce glare in arctic conditions. 

• Luminosity: Self-powered tritium gas tubes (H3) at all hour markers and hands for constant visibility without external light charging.  The 12 o'clock tube is orange for orientation, while others are green.  The bezel triangle uses MaraGlo™ paint. 

• Crystal: 2.8mm thick flat sapphire crystal with anti-reflective properties.

• Bezel: Unidirectional rotating bezel with a black anodized aluminum insert and 60-minute scale, designed to be operated with thick gloves. 

• Water Resistance: Rated to 300 meters (30 ATM) via a screw-down crown and case back with an O-ring system. 

• Bracelet: 20mm lug width fitted with a 316L stainless steel bracelet featuring a brushed deployant clasp with safety.  

The watch is powered by the Marathon M2 caliber, which is a modified Sellita SW200-1 (equivalent to the ETA 2824-2) enhanced for military durability. 

• Caliber: Marathon M2 (based on Sellita SW200-1). 

• Type: Self-winding automatic with manual winding capability. 

• Jewels: 26 jewels.

• Frequency: 28,800 vibrations per hour (4 Hz), resulting in a smooth seconds hand sweep.

• Power Reserve: Approximately 38 to 42 hours. 

• Shock Protection: Equipped with an Incabloc™ shock absorber system to withstand high-impact environments. 

• Modifications: Features high-torque pinions to connect the movement to the hands securely and a reinforced steel suspension system. 

• Functions: Central hours, minutes, sweeping seconds, and a date complication positioned at 4:30. Includes hacking seconds for precise synchronization.