Really pleased with my purchase. First of all the packaging was really good. Included in the box was the cardo unit, 2 options for mounting to the helmet, a self adhesive type and a clip on type for different helmet style, you also get 2 different microphones, one for full face helmets and one for open face and flip up helmets. Very easy to install, unit is very secure on the helmet and it has raised buttons which make it easy to feel when riding. Easy to set up and sound quality is really good. Speakers are very comfortable, can't feel them at all