Sony introduced a product to the world market in 1979, and in October 2010 announced that they would cease selling it in Japan. What product was it?
Sony Walkman NW-S610 NW-S710 Net MD Walkman Walk-man Walkman Core Sony Radio/CD Player Soundabout TPS-L2 NW-D series Walkman Walkman Phones Sony walkman srf-49 Walkman Phone
soundabout nw d series walkman net md walkman phone walk man sony walkman srf 49 walkman sony radio cd player walkman core walkman phones tps l2 nw s710 sony walkman nw s610
walkman
WikipediaEntity
Walkman