Longines revealed the new Master Collection Annual Calendar at Baselworld 2018. Its stainless steel case is measured at 40mm. The silver dial with diamond index features hours, minutes, seconds and an annual calendar positioned at 3 o'clock displaying the month and day. This classic timepiece is powered by a self-winding mechanical movement, Calibre L897. 2, with 64 hours power reserve. The Annual Calendar is presented on a stainless steel bracelet.