While Bose Sport Open Earbuds consist of two discrete earbuds, they operate together as one single pair. If you are accustomed to using one earbud in order to maintain awareness of your surroundings, you will enjoy the way the design of Bose Sport Open Earbuds allows you to wear both buds and still hear everything going on around you.\rHowever, if you prefer to use just one earbud, the right bud may be used alone, since the right earbud houses the product’s microphones and its connection to your streaming device. The left bud cannot be used without the right bud present.