The Monster Bluetooth FM Transmitter and 20W Car Charger with Power Delivery Fast Charge Type-C Port and Quick Charge 3.0 USB Port is a great way to listen to your favorite music and charge your phone while driving. The charger includes 20W and QC 3.0 shared between Type-C and USB and features the ability to fast charge two devices simultaneously. The bass boost button allows for enhanced audio performance, and you can talk hands-free and stream music from your Bluetooth device to your car stereo with the built-in USB music port. The Monster Transmitter supports both Siri and Google Assistant by holding down on the button and speaking when prompted or activating "Hey Siri" or the Google "Voice Match" to allow for the listening feature through the transmitter. Make the most out of your music while driving with the Monster Bluetooth FM Transmitter with Dual Charging.