They’re clipped to your body, and your phone (or computer) doesn’t have to be. It’s also the size of a pack of gum - tiny. They also don’t use standard bluetoo

They’re clipped to your body, and your phone (or computer) doesn’t have to be. It’s also the size of a pack of gum - tiny. They also don’t use standard bluetooth codecs, they use a different “HiFi” codec (I don’t know the details; but it’s significantly higher quality audio), and the range is pretty good - across the house or further for me.