Longines HydroConquest GMT

The Longines HydroConquest GMT, reference L3.790.4.56.6, is a GMT watch with a 41 mm case in steel. The sunray black dial has applied indexes and polished silvered hands. The case measures 12.9 mm thick and 49.4 mm lug-to-lug, with water resistance rated to 300 metres; the case has a screw-down crown. Self-winding calibre L844.5 provides up to 72 hours of power reserve. A scratch-resistant sapphire crystal covers the dial, with anti-reflective coating on both sides. A steel bracelet closes with a double security folding clasp with a micro adjustment system. The dial includes a date display and central seconds. The case has a unidirectional rotating ceramic bezel.