Marty's Walkman is an Aiwa HS-PO2 MkII.
Aiwa is an electronics company that was founded in 1951.
History[]
Marty McFly's Walkman was a Aiwa HS-PO2 MkII. While disguised as Darth Vader, Marty used the device to wake his father by playing Eddie Van Halen music at full blast.