The Longines Master ref: L2.773.4.78.3 features a stainless steel case with a diameter of 42mm. This automatic winding watch is powered by the Longines caliber L678.2 and was released in 2017. It includes a silver dial with a 24-hour indication, date, month, chronograph, and moonphase functions. The combination of these features makes it a versatile timepiece suitable for various occasions.