Bluetooth is a new function of the latest cellular phones that allows you to wirelessly connect your cellular phone to other accessories such as a laptop or wireless headset. BMW's Bluetooth system takes advantage of this functionality to allow you to use your standard Bluetooth enabled phone in your BMW providing safe hands-fee operation while driving, plus some additional features such as voice control of your cellular phone and navigation system (if equipped). The nice thing about Bluetooth is you do not need to physically connect your cellular phone to your 2002-2004 Euro and 2003-2004 North American BMW designed Range Rover. You can keep your phone in your pocket or purse and still use all of the functions. Any of the pictures showing the cellphone phone in a cradle are just illustrating the optional charging and the boosting of your cellular phone antenna using the optional BMW snap in adapters. With the Bluetooth system you can use the Range Rover steering wheel and radio controls to navigate your cellular phone phonebook, dial numbers, increase volume, ect. The system also allows for the voice control of your cellular phone, voice control of your navigation system and notepad (to save a message to yourself for later replay). The system operates just as The BMW X5 factory installed phone would operate with the added benefit of voice recognition and voice control of phone and nav. BMW Bluetooth Systems are for BMWs either with Navigation or without Navigation.NOTE: Our Bluetooth Kits come with the latest Generation BMW ULF modules Available as shown in the BMW Compatibility matrix (and NOT the problematic first generation 84 21 954 552 others are selling, Be careful on getting older ULF modules as some people have had difficulties and incompatibilities with the old first generation ULF modules. Why use Our Bluetooth Solution? For a pictorial overview of the 2003-2004 Range Rover installation click HERE. All Kits available for immediate Shipment Optional Snap in adapters If your Rover is equipped with a Rover Phone system, you will have the microphone. If not equipped with phone, but only prewired the best option is to look at the microphone cover and verify See link for info