The Longines HydroConquest ref: L3.781.4.56.9 features a stainless steel case with a diameter of 41mm. This automatic watch is powered by the Longines caliber L888.2 movement and includes a date function. The black dial provides a striking contrast against the stainless steel, making it a versatile choice for various occasions. This model was released in 2018, showcasing a blend of functionality and style.