Manta Ray themed gradient blue dial with stamped wave pattern. Automatic Diver. Manual and automatic winding capabilities. 21,600 vibrations per hour. Power reserve: approximately 41 hours. 24 jewels. Black ceramic uni-directional rotating elapsed timing bezel. Magnified day/date calendar. LumiBrite hands and markers Sapphire crystal with anti-reflective coating on the inner surface. Screwdown crown and Special Edition caseback. Case diameter: 45.0mm. Stainless steel case Deep blue silicone strap Water Resistance:. Divers Watch 200 meters (660 feet). Follows ISO standards and is suitable for scuba diving.. Caliber 4R36. . . . . . . . . .