The Argonaut Bronze is available with either a traditional black military dial or a naval blue sargasso dial and houses a three-handed chronometer rated BE-92AV movement with 38 hour power reserve. Its name is inspired by Greek mythology and is synonymous with Navy history having appeared on commissioned ships for nearly 250 years. The use of bronze nods to the materials importance in naval engineering due to its high corrosion resistance to salt water. The case is made of CuSn8 bronze, a solid solution strengthened copper alloy with 8% tin. The high tin content adds to strength, wear, and resistance to corrosion and its bronze patina will develop over time and be totally unique to the wearer meaning no two watches will look the same. In the 1940s very strict performance specifications for the original Dirty Dozen were set which included waterproofing, regulation to chronometer specification, luminous markings on the dial and a robust case construction. The Argonaut has not only been designed and engineered to meet these criteria but also to reflect the needs of Her Majestys Armed Forces today.