content: If you ride a bike you need one of these. The only complaint I have is with the bluetooth. It has two channels of bluthooth but has a very limited amount of phones that it will work with. Most of them are very old model. If you hook up a phone not on the list it will pair up but if you also pair up a headset then it goes crazy. Once I found an old phone (Motorla RAZR) it works great.