Excellent purchase I drive Comercial trucks for a living so the trucks are loud especially on the highway

Very GoodThe person on the other end could hear me while I was driving on a highway with a noisy truck in the next lane

People were like why you yelling, I tended to talk loud cause my truck was loud

I drive a noisy truck and people can't hear me unless I pull to the shoulder and stop

Didn,t work

once in awhile I do as yesterday and the same problem still persist r with this unit