The Jabra SPORT is a bluetooth stereo headset which lets you listen to music and make phone calls simultaneously, without the hassle of wires. The behind-the ear fit is comfortable for workouts and the military grade exterior protects it from the elements. The headset features a windshield microphone, built-in FM radio and controls for answer/end,play/pause and volume. It is also compatible with the Endomondo app which will read aloud your workout through the headset. Battrery life is estimated at 3 hours for music playback.