First as often, the first step is to go to the manufacturer's website, download the app dedicated to this model to update the internal software of this helmet. Then you must pair the headset to the smartphone or other same model helmet to use the intercom function (this one is autonomous and does not use the phone). There are only two control buttons to handle everything, it presses on each ear, is easy to operate even with gloves against by considering the number of features, you have to learn the instructions for future use in much . Fortunately the basic controls are simple. to answer a call hands free is simple, the same for the intercom and volume, to play against pieces of the smartphone or phone that is much less obvious with double or triple clicks left / right XD. Pleasantly surprised at the volume and sound quality, uptake of the microphone, intercom works fine up to 400 see 500m by open ground beyond against noise and crackles are heard, or if there is a lot of obstacles between the helmets. Possibility of 4 paired headsets for outings with family or friends. The headphones slip into a earmuffs provided, comfortable and convenient passing behind the neck. I found this one a bit short in length level but I'm a big build and nevertheless it covered me well ears. Only problem, what about use with a ski helmet? The notice states that this is possible, but how? 1) the helmet covers the ears and it slides alone headphones in the recess of the helmet but more possible to access the control buttons ... 2) The helmet does not cover the ears but in this case how to keep earphone (which include speakers, microphone, electronic, battery, USB cable for charging and updating the system) Maybe it takes a special helmet for this model, I have not dug. In use it is nice to share his descent live with his partner and to be on the slopes without having to leave his telephone pocket and therefore off the gloves + quiet music descents :-) In short a good serious product made by a specialist in the field since they are also models dedicated to bikers
