The behind-the-scenes tales of hit products and creations from Japan: this is Japan's Top Inventions. This time, durable timepieces that don't break when dropped: shock resistant wristwatches. These unique watches were created by a Japanese firm in 1983, and are now available in 138 countries and regions. Over 100 million units have been shipped to date. Discover their surprising inspiration -- a child playing with a rubber ball in a park -- and more in the little-known story behind this invention.

The behind-the-scenes tales of hit products and creations from Japan: this is Japan's Top Inventions. This time, probiotic drinks, now consumed in 40 countries and regions. They were created by Yakult founder Minoru Shirota, who succeeded in cultivating strong lactic acid bacteria that could survive digestive fluids. With the philosophy "a healthy intestinal tract leads to a long life," Shirota spread his probiotic drink far and wide. Join us and learn more about the story behind these drinks.