Sony's Walkman, the first truly affordable portable music player, turns 40
51 The First Sony Walkman Stock Photos, High-Res Pictures, and Images - Getty Images
Audio Archaeology: History of a Classic, The SONY Walkman – Project Perfection
The Walkman is introduced, July 1, 1979 - EDN
Sony NW-A306 DAP Music Player Review - Moon Audio
Sony Walkman: What Kids Think Now, What They're Missing – aNewDomain
Sony money box - Portable Audio
Sony introduces Signature Sound series headphones and Walkman - sit down for the price
Sony Introduces Two Affordable Walkmans for Portable Music Listening
Sony Electronics Unveils Two New Walkman® with Enhanced Sound Quality and Longer Battery Life Including the NW-ZX707 Premium Walkman
Sony Announces a Very Cheap Walkman NWZ-E350 Series Both Sound Quality and Performance Combined - GIGAZINE