Tekfusion Twinwoofers Mobile Phone Headset The Twinwoofers M deliver high definition sound with their 10mm moving coil speakers, giving you wide-range frequency response. Twinwoofers M features a remote with built in echo-cancelling microphone that improves your call quality so that you are clearly audible to the recepient. You can also control your music playback with the click of a single button. Cancel up to 20dB of ambient noise. Noise-cancellation gives your calls a new meaning. The Twinwoofers M makes your phone calls sound much more clearer without worrying about the noises in public areas. Portability has never been this easy. The Twinwoofers M come with two high quality protective cases; one regular Twinwoofers case and a second Tekfusion hard carry case in which you can store your pair during your longer trips.