The Cobra 75 WX ST is a unique CB radio that incorporates all the great technology into 1 handheld unit. If size is an issue in your vehicle, the 75 WX ST could be the answer. The radio is small enough to fit in your hand, but also can be fixed mounted in your vehicle. You can also add the AC701 accessory to any vehicle and transfer the 75 WX ST between them. The AC701 is included, but if you have multiple vehicles, you need to have one in everyone of them.