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










