The Longines Master Collection L2.893.4.77.6 is an automatic watch featuring a 42.00 mm stainless steel case and a silver 'barleycorn' dial. It includes a date function and is powered by a self-winding mechanical movement operating at 25,200 vibrations per hour, offering a power reserve of up to 72 hours. The watch is water-resistant to 3 bar and has a scratch-resistant sapphire crystal with several layers of anti-reflective coating on both sides.