Prospex Speedtimer Solar Chronograph
Design inspired by Seiko's first precision chronographs, developed for international sporting competitions in 1964
Chronograph measures up to 60 minutes of elapsed time in 1/5-second increments with split time measurement function
White dial with sand-blasted texture and black subdials
Date calendar
24-hour subdial
Beige LumiBrite hands and markers
Black tachymeter bezel
Screwdown caseback
Tri-fold push button release clasp
