When you go to a ball game or other sports arena, there are no announcers doing the play-by-play. You need a radio. The armband design of this battery-powered radio makes this AM/FM radio a perfect partner for active users. Listen to sports, news, talk, or music while wandering and running. The elastic armband offers a gentle, supportive grip to your arm while retaining comfort. Used with included or optional earphones, sound and reception are excellent. The armband radio uses 2 AAA batteries (not included).