Seiko Prospex Solar Tokyo Limited Edition SSC955

Seiko celebrates the World Athletics Championships Tokyo 25 with a limited-edition Prospex Speedtimer Solar Chronograph.

This year marks the 19th consecutive World Athletics Championships timed by Seiko.

Seiko’s journey in watchmaking has been marked by a series of pioneering advancements in sports timing. From its pioneering use of a heart-shaped cam for more accurate timing in stopwatches in the early 1960s to the creation of Japan’s first chronograph in 1964 and the original automatic Speedtimer in 1969, Seiko has consistently set and upheld a high standard for precision.

Since 1987, Seiko has been the timekeeper of choice for World Athletics, the world championships of track and field. In 2025, the World Athletics Championships return to Tokyo for the first time in 34 years, and Seiko will once again deploy its state-of-the-art timing equipment in the city of its founding, marking a momentous event in its history in sports timing. In commemoration of World Athletics 2025, Seiko marks the latest chapter in this legacy with a Prospex Speedtimer Solar Chronograph Limited Edition while honoring the performances of the approximately 2,000 athletes who will take part in the championships.