Here is a look at the history of the Sony Walkman, a device created in 1979 by Masaru Ibuka and Akio Morita that ushered in the era of portable music.
Walkman - Wikipedia
Sony Walkman Turns 36 This Year - A Look At the Iconic Device
Sony Group Portal - Product & Technology Milestones−Personal Audio
They Still Make Those? A Little History Behind the Walkman
Sony Group Portal - Product & Technology Milestones−Personal Audio
Design is fine. History is mine. — Sony Walkman range: DC2 (with Dolby C) & Walkman
Sony Group Portal - Product & Technology Milestones−Personal Audio
Sony Group Portal - Product & Technology Milestones−Personal Audio
Sony Group Portal - Product & Technology Milestones−Personal Audio
The First Sony Walkman Was Released 40 Years Ago Today
The history of the Walkman: 35 years of iconic music players - The Verge
The History of Portable Music Players
Sony Walkman - Design Museum
Sony Group Portal - Product & Technology Milestones−Personal Audio
Specs, Brand, Sony, Model, WM-3000, Color, Red, Battery, 2x AA, Date First Available, 1986, Headphones Color, Yellow, Format, Cassette, Turn heads
Sony Walkman WM-3000 My First Sony Red Portable Cassette Player