This professional diver’s watch uses a matte black rubber coating and is made through a complex vulcanization process. It is equipped with a newly developed rotating diving outer ring, a mechanical chronograph movement, and a week. And date display, the small second hand is equipped with a stop function, a new bracelet quick-change system, the bottom cover has a sea turtle relief. The case is pressurized and heated in a special mold, which is permanently fused with this tactile warm, collision-resistant and non-slip material. It can withstand a pressure of 12 bar. The power reserve can reach 44 hours when fully wound, and the cumulative recording time can reach 12 hours. The bottom of the sapphire glass is coated with a thick super-luminova, even if there is no lighting, it can shine through the unprinted surface or the number of the sapphire glass ring.