The Longines HydroConquest ref: L3.790.4.56.9 features a 41mm stainless steel case with a black ceramic bezel. This automatic watch is powered by the Longines caliber L844.4 movement, introduced in 2023. It includes a date function and a 24-hour indication for enhanced timekeeping. The combination of materials and design elements makes it suitable for both aquatic and everyday wear.