With the Sony MDR-EX155AP earbuds, you can listen to music at home or on the go. The earbuds' in-ear design closes off your ear very well,. This allows you to hear your favorite music better. Use the microphone in the cable to answer your incoming calls. That way, you won't have to take your phone out of your pocket. The earbuds come with 4 additional sizes of buds. That way, the earbuds will always fit any ear.