Baselworld / Longines Master Collection

　Launched in 2005, Longines' Master Collection is a collection that combines elegant design with the high performance that Longines is known for. At Baselworld 2018, a new automatic model equipped with an annual calendar function was announced. An annual calendar is a calendar function that automatically corrects and displays the dates throughout the year, and automatically determines the number of days in each month (30 or 31 days). The Longines Master Collection is the brand's first model equipped with an annual calendar.
　There are four dial designs, each with a different color and hour index combination. The silver-colored models feature Arabic numerals or 13 diamonds as hour markers, while the black model features Roman numerals and the sunray blue model features bar indexes.