Longines Avigation Watch Type A-7

The Longines Avigation Watch Type A-7, reference L2.812.4.53.2, is a chronograph with a 41 mm round case in steel. Painted Arabic numerals accompany polished silvered hands on the black dial. Measuring 14.1 mm thick and 49 mm lug-to-lug, the case has a water-resistance rating of 30 metres. Self-winding calibre L788.2 has up to 60 hours of power reserve and beats at 28,800 vibrations per hour. A brown alligator leather strap with a calf leather underside fastens with a pin buckle. The dial has a date display and small seconds. The dial is covered by a scratch-resistant sapphire crystal, with several layers of anti-reflective coating on the underside.