This headset was designed to give you a stable, secure fit for pretty much any kind of situation you might want to use it in—from headset-to-headset intercom duty, to Bluetooth hands-free calling, staying in touch with your companions in the great outdoors, or playing your favorite tunes from an MP3 player, you’ll always enjoy natural, crystal-clear sound quality. Bluetooth music playback is controlled by Playback Control, and the sound is automatically boosted when operating in noisy environments.