The Sony WM-F15 is a portable cassette player that was introduced in the early 1980s, characterized by its compact design and lightweight structure. This device integrates a radio tuner, allowing users to enjoy both cassette tapes and FM/AM radio broadcasts. One of the standout features of the WM-F15 is its built-in Dolby noise reduction technology, which enhances audio playback quality by minimizing tape hiss. The player is equipped with a headphone jack and has a belt clip for convenient portability. It operates on standard AA batteries, ensuring a good battery life for on-the-go usage. The build quality is sturdy, and the controls are user-friendly, typically featuring a play, stop, rewind, and fast-forward mechanism, alongside a tuning dial for the radio.