The Longines HydroConquest L3.788.4.90.6 commands attention with its black lacquered polished dial framed by a ceramic bezel insert. Built for serious diving with 300 metres of water resistance, this 42mm stainless steel timepiece is powered by an automatic movement delivering 72 hours of power reserve. The combination of a robust stainless steel bracelet and scratch-resistant sapphire crystal with anti-reflective coating makes this a dependable companion from the ocean depths to the boardroom.