Method of use:
1, the use of intercom closed, then insert the headset walkie-talkie jack, boot.
2, confirm that all headphones plug is inserted inside the headphone jack.
3, in a speech, microphone, leave lips 2 to 5 cm.
4, in a speech to is about Michael, can improve the effect of noise reduction.
5, replacement of different types of headphones head need to close the intercom.