Portable Apple CarPlay & Android Auto:Support Wireless Carplay & Android Auto, support to use smart voice assistant or touch the display, you can get directions, make calls, listen to music and sync the video etc. Easy Installation & Wider Compatible:This portable bluetooth Apple CarPlay no need modifying your original car radio. With Self-adhesive and Suction bracket, easy install to your dashboard, is suitable for 12-24V car types. 3 Ways Connection:There 3 ways to get connect to the car stereo include Bluetooth, Wired and Wireless. Notes: FM only has the function of frequency matching, and does not have the reception of radio signals and playing radio signals. Two Method to Get the Sound from Car Stereo:1. conenct audio port of this product to AUX port of your factory car(Recommend). 2.turn on the 'FM transimitter' and adjust the frequency to be consistent with the car radio frequency to play car stereo sound.