The 3M™ Peltor™ LiteCom Pro III neckband is a high-performance hearing protector with a built-in communication radio for cable free short-range communication with other LiteCom headsets and portable two-way radios programmed on the same frequency. Bluetooth® Multipoint connectivity for connecting mobile devices The noise cancelling speech microphone with VOX functionality enables you to communicate hands free in noisy environments. SNR: 32dB. Possibility of programming your own frequencies (not included in the price). In accordance with: EN 352-6