His poor value. Headlock with the manual search for free channels (that little take up to 20 minutes to find a clean channel ... and if you have the misfortune of missing the channel, you can start over !! good luck! !!
Note that I memorized the channel but some time after prolonged inactivity, I had to restart the search for the right channel.
Otherwise, no problem for the hands-free kit. Communication is perfect!