Very easy to configure. I paired with my 2 phones without worries. Very good battery life. Connection to such a very fast from turning on the headset. The 2 flats are: the headset does not answer or end depending on the type of bluetooth such (not easy to guess and this is an important function). The back of the headset is a button that performs bis for such compatible and when you drag the headset on in a pocket, the last number is too easily recalled. It is therefore impossible to slide the headset in the pocket of jeans without turning it off before.