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Bluetooth headsets are wireless devices that are worn over the ear or around the neck and use Bluetooth technology to connect to electronic devices such as smartphones, tablets, and computers. They allow users to make and receive calls, listen to music, and participate in voice chats without the need for wired connections. Bluetooth headsets typically have built-in microphones for hands-free communication and offer various features such as noise cancellation, volume control, and playback controls. They are popular accessories for individuals who are constantly on the go and need to stay connected while keeping their hands free.