WM-F502

The WM-F502 built on the same slim rechargeable Walkman platform as the WM-F501 but expanded the tuner section to cover FM, AM, and both VHF and UHF TV audio bands. Auto-reverse, Dolby B, Dynamic Bass Boost, and an amorphous head remained part of the cassette side, while the metal chassis and supplied carry case kept the package portable despite the more ambitious broadcast coverage. It is a compact machine with a noticeably broader listening range than most of its siblings.

What sets the F502 apart is not the cassette mechanism so much as the sense that Sony is treating portable listening as a wider media habit instead of just a tape habit. For users following television audio, sports, or live broadcast content, it turned the Walkman into something closer to a pocket entertainment receiver. That makes it one of the more revealing late-1980s models, not because it changed the form, but because it widened the use case around it.