The Marathon Large Bilingual Divers Automatic is a large dive watch that displays the date and day of the week in English or French. Designed for use by Search and Rescue (SAR) divers, the Large Bilingual Divers Automatic is a watch built to withstand the most extreme of conditions. The watch is also known as the Jumbo Day Date (JDD) and is certified for water resistance to 30 ATM - 300 meters (1000 feet).