The new The Longines Twenty-Four Hours Single Push-Piece Chronograph, which is part of the Heritage collection, echoes the lines of a pilot's watch dating back to the 1950s as well as the imposing original diameter of 47.50 mm. The original model was equipped with a calibre originally designed for a pocket watch and later adapted to the wristwatch, while the heart of the new model is the automatic L789 calibre, a column-wheel chronograph, which displays the hours in 24-hour format, small seconds at 9 o'clock and the date in the lower 6 o'clock area. The black or brown alligator leather strap matches the colour of the dial, either silver-plated or black.
