The Squale 1521 Blue Blasted Bracelet 1521BLUEBL.SQ20S is a professional-grade dive watch featuring a 42mm bead-blasted 316L stainless steel case and a matching steel bracelet. It is powered by the Swiss automatic Sellita SW200-1 movement, offering a 38-hour power reserve. The watch boasts a blue dial with Super-LumiNova C3 luminous indexes and hands for enhanced visibility. A flat sapphire crystal with anti-reflective coating protects the dial. The unidirectional bezel has a blue aluminum insert, and the screw-down crown is positioned at 4 o'clock to prevent accidental adjustments. With a water resistance of 500 meters, this timepiece is suitable for serious underwater exploration. Reference number: 1521BLUEBL.SQ20S.