SONY Walkman Dedicated Direct Recording Kit KPD-NWU10 Since I don't have the main unit, I haven't been able to confirm its operation. Please consider purchasing if you understand this. *Please be sure to check the compatible models yourself as they are limited. Walkman WALKMAN Walkman Keypad [Reference] Listed on the SONY website *1 Compatible only with Walkman models equipped with the direct recording function. *2 Compatible only with NW-A20/A10/S10/S780/S770/E080 series. Music transferred from a computer or dock component cannot be edited.