This new limited-edition SFJ007P1 solar chronograph celebrates Seiko's sporting heritage and the World Athletics Championships. The dial features a texture that evokes the surface of the racetrack, and the hands, as well as the outer ring of each sub-dial, are gold-colored to recall the first-place medal. This model is equipped with the new Calibre 8A50 solar chronograph, which measures elapsed time in increments of 1/100th of a second. The hour and minute hands, as well as the hour markers for the time-of-day display, are filled with Lumibrite to enhance readability in the dark. The push-pieces are specially designed to ensure high operability and precision when measuring elapsed time, essential to every Prospex Speedtimer creation.