The updated Supermarine S2000, designed with professional divers in mind, maintains a larger hardened stainless steel case, build to withstand depths of 2000m and including Anti-Shock and a Faraday Cage, but includes an updated sapphire uni-directional rotating bezel with 20 minute marker, and submarine screw stamped caseback. This rubber strap model highlights the remaining 20mins in the same shade of yellow as the tip of the minute hand.