Portable music players are electronic devices designed to play audio files, allowing users to enjoy music on the go. They typically support various file formats, such as MP3 and WAV, and can store thousands of songs. Many portable music players come with features like built-in speakers, headphone jacks, and touch screens for easy navigation. These devices have evolved over the years, with early models like the Walkman paving the way for modern options. Today, many people use smartphones as portable music players, utilizing apps like Spotify or Apple Music to access vast libraries of songs and playlists.