 All right. The first one, the Sony Walkman, first one on sale in July 1st, 1979. Yeah. The first personal stereo cassette player called the Sony Walkman. I remember the first time I saw a transistor radio. Back when I was a little boy living in the Bronx, everybody would be outside because nobody had any air conditioning. So it was a hot summer night, and there was a man named Dexter Levinson who was friends with my father. I remember Mr. Levinson. He was a great guy.