The +
. good sound quality
. possible use even with glasses
. innovative functions (eg voice commands via the headset using only Bluetooth phone without any other function)
. GSM connection / Easy headset
. physical controls: button on / off intuitive, its idem, hang easy to find, and "options" button that makes the headset can offer you several commands
. autonomy in progress
The -:
. the previous was USB connection, the latter has a proprietary socket, which is not practical
. micro grid is larger, I feel that my parties hear a little worse
