Headphones are devices that are placed in the ear to hear sound. They usually consist of two headphones, each with speakers to create sound. Headphones can be used for simple listening, such as listening to music, listening to podcasts, or talking on the phone. They can be used in computers, televisions, music players and other electronic devices. Headphones can be built in via a standard jack port or Bluetooth connection. They provide high-quality sound, including a stereo effect. Headphones are used for personal listeners, musicians and audio writers.