Earphones, also known as headphones or earbuds, are small audio devices designed to be worn over or inside the ears for listening to audio content such as music, podcasts, or phone calls. Earphones come in various designs, including in-ear, on-ear, and over-ear styles. In-ear earphones are inserted directly into the ear canal, providing a snug fit and good noise isolation. On-ear earphones rest on the outer ear, while over-ear earphones have larger ear cups that encompass the entire ear.