Built for underwater performance without sacrificing Longines refinement, the HydroConquest L3.788.4.70.6 features a commanding 42mm stainless steel case and matching bracelet. Its polished black lacquered dial combines applied hour markers with hands and detailing treated with Swiss Super-LumiNova for enhanced visibility in low-light conditions, while a date display adds everyday practicality. A black ceramic unidirectional rotating bezel allows elapsed dive time to be monitored, and scratch-resistant sapphire crystal with anti-reflective coating on both sides provides lasting clarity. The bracelet is secured by a double-safety folding clasp with a push-piece opening mechanism and integrated diving extension. Inside, a 21-jewel Swiss automatic mechanical movement with a monocrystalline silicon balance spring beats at 25,200 vibrations per hour and delivers up to 72 hours of power reserve. Its serious aquatic credentials include a screw-in crown, screwed case back, and water resistance to 300 metres. Measuring 11.7mm thick with a 21mm lug width, the watch weighs 168g, giving it the reassuringly substantial feel expected from a capable dive watch. • Powered by the Swiss made Caliber L888.5 automatic movement with 21 jewels and a power reserve of up to 72 hours • Presented on a silver stainless steel bracelet with fold over clasp • Scratch-resistant sapphire crystal, with several layers of anti-reflective coating on both sides • 42.0mm case width & 51.2mm case length measuring from lug to lug • 300 metre water resistance