Univerasl Fm Transmitter car kit Holder stents Hands Free Calling Radio Play Music Mp3 Player with 3.5mm AUX Port USB Charger(fm Broad) Rapid 1 USB Charger Port with a maximum 2.1A Output. An FM transmitter to play music and audio through your existing car stereo system via aux cable and FM radio station The bottom with unique design can adjust the width and prevent phone sliding out. The inside with soft&non-slip material will not scratch phone Charge your smart phone or other products with 5V/1A output:With the FM transmitter & USB charger, you can charge your electronic device while simultaneously listening to your favorite music or podcast through your existing car stereo.