Sony SRF46 FM Radio Walkman Tune into your favorite station while you're on the go. Sony's SRF-46 Walkman. FM Stereo Radio offers an FM tuner in a conveniently compact design. It lets you enjoy a wide range of music, freely available over the airwaves. Enjoy the original source of free music at great savings! Features include: FM stereo tuner Compact design Local/DX distance switch Stereo headphones Belt clip Single AA battery operation