Listen to your favorite MP3 in stereo! Experience improved sound clarity - even in noisy environments - with the acoustically tuned speaker. And don't worry about getting caught up in the music; the headset automatically mutes for an incoming call and resumes playing when the call has ended. Send/End key on headset allows users to place, receive and end calls without touching the phone. Simply press the button on the headset and start talking. Ideal for private hands-free operation. Includes a shirt clip, so you can easily walk and talk hands-free. Conduct important personal and business calls on-the-go. Ergonomic earpiece with soft comfort ring provides comfortable fit even over extended periods.