Marathon CSAR Swiss Made Military Issue Chronograph Pilot Automatic Watch with Tritium (46mm, Rubber Strap) WW194014

Marathon's Pilot's Chronograph is a robust chronograph built to the same standards of water resistance as Marathon's other dive watches. The Pilot's Chronograph is designed for use in dive, search and rescue operations, as well as pilots and aircrew. The Pilot's Chronograph is commonly referred to as the Chronograph Search and Rescue (CSAR). The CSAR. The CSAR is water resistant down to 30 ATM - 300 meters (1000 feet). Made from 316L surgical grade stainless steel, the CSAR is a purpose built watch that will serve you well on any adventure you take. The CSAR's synthetic sapphire features a scratch resistant anti-reflective coating to ensure maximum dial legibility and strength. Inside the CSAR is a Swiss made, 25 Jewel Valjoux ETA 7750 automatic chronograph movement which ensue accurate and reliable timekeeping. The CSAR has self-contained Tritium gas tubes placed on each hour marking as well as on the minute and hour hands. Additionally, MaraGlo photoluminescent paint is used on the 12-hour bezel marker and on the minute and hour chronograph register indexes. Tritium tubes are self-illuminating gas tubes containing an isotope of hydrogen, preventing a loss of brightness and the requirement of a light source to remain active. The dial of the CSAR shows 12 hour and 24-hour time and also displays the Date and Day. Chronograph timing is dual graduated, inner graduations are 1/5 sec and as well as decimal 1/100 minute timing (alternate inner timing ring). A sweep central second hand indicates 1/5 sec up to 60 seconds; Chronograph sub registers measure up to 30 minutes and 12 hours each. Register indexes & hands use MARAGLO paint for low light viewing. Encapsulated tritium (Isotope H3) light sources are used for dial at each hour position as well as the Minute and Hour hands, activity between 28-30 millicuries (under 30 millicuries).