Paying homage to its distinguished diving watch legacy and drawing upon more than a century of expertise in chiming watches, the Grande Maison introduces the Jaeger-LeCoultre Polaris Mariner watches with two new high-performance timepieces as a perfect addition to the sporty yet elegant Jaeger-LeCoultre Polaris collection. The JLC Memovox has become the reference in wristwatch alarm calibres since it was introduced 70 years ago. Back in the fifties, scuba diving was a risky and challenging military activity.