The Longines Master Collection ref: L2.773.4.61.2 features a stainless steel case with a diameter of 42mm. This automatic watch is powered by the Longines caliber L678.2 and was released in 2023. It includes a grey 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.