Valencia MpX mini MP3 player AAA-powered boxed vintage only 32MB USB 1.1
Power: 2 batteries AAA (3V). It was tested recently with 2x AAA batteries and it is still working. - audio formats: WMA, MP3, AAC. - PC interface: USB V1.1. - output frequency: 20Hz-20kHz. - total harmonic distortion: <0.1%.