Authentic Longines Hydroconquest sports watch, automatic movement powered by L619/888 engine with 64 hours power reserve. Features sunray blue dial and Super-LumiNova markers for luminous time reading underwater. Comes in a ceramic case combined with brushed stainless steel elements, equipped with a deployment foldover clasp. Has a unidirectional rotating bezel. Scratch resistant sapphire crystal provides clear visibility of the date display at 3 o'clock via an aperture. Powered by a mechanical self-winding mechanism ensuring accurate timekeeping for this men's timepiece measuring 41mm in diameter and water resistant to 300 meters / 990 feet depth with solid case back included.