SSC935P1 Seiko Prospex Speedtimer Chrono Solar Watch 39 Caliber V192 Automatic Chronograph, with calendar. Solar chronographs inspired by the 1969 Speedtimer, the world's first automatic chronograph watch equipped with a vertical clutch and column wheel. The new Speedtimer is powered by Solar Caliber V192, offers a 24-hour indicator, a time-of-day seconds hand, a 60-minute chronograph in a subdial at six o'clock, and a power reserve function. Offered in four different dial colors gold and black, they will join Prospex's core collection. This solar chronograph watch is part of the Prospex Speedtimer watch collection that represents Seiko's legacy of professional timekeeping. SSC935P1 Seiko Prospex Speedtimer Chrono Solar Watch 39 Caliber V192 Automatic Chronograph, with calendar. Solar chronographs inspired by the 1969 Speedtimer, the world's first automatic chronograph watch equipped with a vertical clutch and column wheel. The new Speedtimer is powered by Solar Caliber V192, offers a 24-hour indicator, a time-of-day seconds hand, a 60-minute chronograph in a subdial at six o'clock, and a power reserve function. Offered in four different dial colors gold and black, they will join Prospex's core collection. This solar chronograph watch is part of the Prospex Speedtimer watch collection that represents Seiko's legacy of professional timekeeping.