The Sony WM-FX673 is a portable cassette player with a built-in FM/AM tuner, designed to provide users with a versatile audio experience. It features a compact body that makes it easy to carry, ideal for on-the-go listening. The device comes with a variety of functionalities, including an automatic music sensor that allows it to easily locate the beginning of a tape and a digital tuning system for selecting radio stations. Its design often includes a built-in speaker and a headphone jack for private listening. The player typically supports standard cassette tapes and is powered by batteries, which contributes to its portability. The WM-FX673 also includes features such as a noise reduction system to enhance audio clarity and a hold switch to prevent accidental operation. This model is part of a lineage of cassette players that emphasize combination functionality, blending the charm of cassette tapes with the convenience of radio.