The Hakone Ekiden, a long-distance relay race held annually between Tokyo and Hakone, is one of the most prestigious races in Japanese college athletics.
The Japanese spider crab is the largest arthropod in the world, with a leg span of up to 4 meters (13 feet).
The digital watch, invented by Seiko in the 1970s, revolutionized the way people tell time and made watches more convenient and accurate.