Longines HydroConquest

The Longines HydroConquest, reference L3.788.4.70.6, is a dive watch with a 42 mm round case in steel. The black lacquered polished dial carries applied indexes alongside polished silvered hands. The case is 11.7 mm thick and 51.2 mm lug-to-lug, with water resistance rated to 300 metres. Self-winding calibre L888.5 provides up to 72 hours of power reserve. A scratch-resistant sapphire crystal covers the hour and minute display, with several layers of anti-reflective coating on both sides. A strap fastens with a double security folding clasp with a micro adjustment system. A date display and central seconds appear on the dial.