40 years after launching the original Walkman, Sony has released an upgrade: A Walkman with a 3.6-inch touchscreen. This retro gadget with a twist will let you download music and stream, but it does not text or make phone calls. Physical controls will let you change volume or switch tracks without using the touch screen. This new nostalgia device costs about $350. The very first Sony Walkman went on sale in Japan on July 1st, 1979.