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Headphones are a pair of small loudspeakers, or less commonly a single speaker, with a way of holding them close to a user's ears and a means of connecting them to a signal source such as an audio amplifier, radio or CD player. They are also known as earphones, earbuds, stereophones, headsets or, informally cans. In the context of telecommunication, the term headset is used to describe a combination of headphone and microphone used for two-way communication, for example with a telephone."
A handsfree is going to be a wireless and headset is wired. Headphone is going to have the bigger earpieces, like a traditional walkman type to listen to music.
Turn off your sound in windows, or you could put it over your neck and just use the mic.