The Longines HydroConquest L3.788.4.70.6 delivers a timeless black lacquered polished dial within the robust 42mm stainless steel case and ceramic bezel that defines the collection. With 300 metres of water resistance and a 72-hour power reserve from its automatic movement, this is a serious dive watch wrapped in refined aesthetics. The stainless steel bracelet and anti-reflective sapphire crystal ensure durability and legibility in every environment.