Very easy to use, the phonebook quickly supported. In use in highway driving with no understanding or concern for the other person to the user. The announcement of the menus is very audible. The only downside is the announcement of the directory names to request confirmation of appeal, it is not too difficult to understand in general after the 2nd or 3rd test, the big downside of this product (damage) because it repeats the recipient's name in "gibberish" incomprehensible and it usually check on the phone display if the called person is the right one ... so that the product is intended to keep hands and eyes free while driving ...