HEADSET ONLY - RADIOS SOLD SEPARATELY Radio communication has proved to be the most reliable way for workers to communicate in a noisy tree work environment. The SwatCOM heavy duty PTT (Press-to-talk) passive headsets work in conjunction with a choice of industrial grade 2-pin radios; iCOM or GME. The PTT button is mounted at the back of the left cup and secured with a waterproof surround. Manufactured in Sweden the SwatCOM AK5850 features outstanding hearing protection (SNR 29dB) and a noise cancelling microphone to filter out background noise for clear voice transmission. The SwatCOM AK5850 product was built to meet the demands of extreme environments. Radios sold separately. This is a 'wired' unit, not Bluetooth.