The Aiwa HS-PX 637 is a portable cassette player that was released in the 1990s. It features a slim design and is powered by two AA batteries. The cassette player has a built-in AM/FM radio tuner, as well as an auto reverse function for continuous playback. It also includes a headphone jack for private listening. The HS-PX 637 allows users to adjust the playback speed and has options for repeat, shuffle, and skip functions. It was a popular choice among cassette enthusiasts during its time.
