Ran across this in my searching. I have one. Plays really loud !! Cant believe seller in description calls it a LIGHTWEIGHT ... yeah RIGHT
IN UK bid start GBP 0.99
RARE VINTAGE SANYO M4430 'WALKMAN'
Item number: 270364772687
wonderful VINTAGE portable Lightweight Stereo Sanyo Walkman high quality Cassette Tape Player

Still in working order and in excellent condition with original case.

Any questions please ask!