The Longines HydroConquest L3.788.4.06.6 is a 42mm stainless steel automatic watch featuring a green lacquered polished dial and a matching ceramic unidirectional rotating bezel. It is powered by the Longines Calibre L888.5, a self-winding mechanical movement operating at 25,200 vibrations per hour, offering a power reserve of approximately 72 hours. The watch includes a monocrystalline silicon balance-spring for enhanced precision and resistance to magnetic fields. Additional features comprise a screw-in crown, screw-down case back, and water resistance up to 300 meters. The stainless steel bracelet is equipped with a double security folding clasp and a micro-adjustment system for optimal fit. Reference number: L3.788.4.06.6.