Seiko Prospex Speedtimer 1/100 sec Solar Chronograph

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Technical specifications


  • Hours
  • Minutes
  • Seconds
  • Chronograph


  • Solar
  • Manufactured


  • Cushion
  • Stainless steel
  • Brushed & Polished
  • 12.90mm
  • 42.00mm


  • Sapphire

Water resistance

  • 10.00atm / 100.00m / 330.00ft


  • Deployment Buckle
  • Stainless steel


  • Stainless steel


  • 2023

Official description

Seiko’s tradition as a pioneer in sports timing began in the 1960s, when the company intro- duced to the world’s sporting stage a range of timing devices that set a new global standard for precision. Today, Seiko introduces into the Prospex collection four new solar chronographs inspired by Seiko’s rich and continuing tradition of sports timing. All four watches are equipped with the new solar chronograph Caliber 8A50, which measures elapsed time in incre- ments of 1/100th of a second.

The new creations feature a 1/100th of a second chronograph counter at the two o’clock position, a seconds counter at 12 o’clock, and a 1/10th of a second counter at 10 o’clock. A time-of-day sub-dial displaying the hours and the minutes is at the six o’clock position, to differentiate clearly the time-of-day from the chronograph functions. When the stopwatch function is utilized, the time-of-day sub-dial becomes a 60-minute counter, with the hour hand remaining hidden beneath the minute hand. In each watch, the hands contrast with the sub-dials to enhance legibility. The hour and minute hands, as well as the indexes of the time-of-day display, are filled with Lumibrite to enhance legibility in the dark. The pushers are specially designed to ensure high operability and high accuracy when measuring elapsed time, crucial in every Prospex Speedtimer creation.

Seiko Prospex Speedtimer PV (SFJ001)