If you have the 730N and it was installed in the Jeep when built; the bluetooth is build in and you should already have the microphone installed. The activation can be done by going into Engineer Mode and activating the Bluetooth/UConnect.
If you have the 430N you will need the Bluetooth module, microphone and USB harness. To activate the Bluetooth/UConnect you will need to go to the dealer and have them connect their Starscan to enable those options.
If either unit was installed after the Jeep was built; then you may need to purchase something to get them to work.