The Sony WM-AF59 is a portable cassette player and recorder that was released in the early 1990s. It features a slim design, making it easy to carry around for on-the-go listening. The device is equipped with a built-in radio tuner, allowing users to listen to FM and AM stations. It supports various playback options, including normal and metal tapes. Additionally, the WM-AF59 includes a microphone input for recording, making it versatile for both playback and recording needs. The cassette door design enhances user experience, and it often comes in a compact size that fits conveniently into pockets or bags. The player generally operates on standard AA batteries, ensuring its portability and ease of power replacement. The device is noted for its durable build and user-friendly controls, including play, stop, rewind, and fast-forward functions.