LONGINES HydroConquest Automatic Watch pairs dive-grade performance with a black lacquered dial. It combines a 42 mm stainless steel case and 30 bar water resistance for reliable everyday and underwater use. Key attributes: Black | Stainless steel | Water resistance up to 30 bar (300 m) | Automatic movement | Luminescent hands and markers (Swiss Super-LumiNova®) | Stainless steel bracelet | Unidirectional rotating bezel | Screw-in crown | Black lacquered polished dial | Ceramic bezel insert | Dimensions & fit: Case diameter: 42.00 mm | Composition & care: Stainless steel | Ceramic | Swiss Super-LumiNova® | Clean with a soft cloth; avoid strong chemicals and impacts; ensure crown is screwed down before submersion; have the watch serviced by an authorized service center periodically.