QC3.0 Quick Charge Type-C Charging Clydek Bluetooth 5.0 FM transmitter has 3 USB ports: QC3.0 + type-C + 5V/1A to meet your different charging requirement, and it can charge three devices simultaneously. With the latest QC3.0 technology, you can truly experience the extreme charging for your QC3.0-enabled devices. Type-C port (5V/3A) efficiently get your IOS or Android device fully charged. The 5V/1A USB Port can read U disk up to 32GB. . 4 Music Playing ModesYou can enjoy the best quality music via Bluetooth/ USB Flash Drive (32GB) / TF Card(32GB)/AUX on this car music player, press the M button to switch between the modes. MP3/WMA/FLAC/WAV format music is supported. . HANDS-FREE CALLINGAfter the Bluetooth FM transmitter connects with your smart phone, it can provide you with a smooth and clear calling through echo cancellation and CVC noise suppression technology. Just press the FM CH button to answer/ hang up/ reject/ redial calls, seamlessly switches between incoming calls and music. Make driving easier and safer. . Use AUX cable, the sound quality is better: You can listen to music without interference without matching the frequency Just use the AUX cable to connect the car and the FM transmitter, and insert a TF card or U disk to achieve it If you want to listen to music on your mobile phone, one more step, which you can just match the Bluetooth of your mobile phone with the FM transmitter. . Multiple ProtectionComes with built-in Smart IC, over-current protection, over-voltage protection, intelligent temperature control, short circuit protection. The Bluetooth FM transmitter effectively prevents multiple unsafe problems. The Car FM transmitter also displays car voltage when plugged into the car cigarette lighter. Enable you to know your car battery state in time . Easy Setting Plug this FM Transmitter into the cigarette lighter socket, set the Car FM Radio to an empty station (85.7-108.0 MHz) and tune the FM Transmitter to the same frequency. Pair your phone and FM transmitter via Bluetooth, and then enjoy your music. . Bluetooth V5.0 Stable TransmissionAdopt Bluetooth 5.0 technology, Clydek FM transmitter has more stable connection and faster transmission when connected with smart phone. Compared with Bluetooth 4.2, Bluetooth 5.0 has: 2xData Transfer Speed, 4xTransmission Range, 8xBroadcast Massage Capacity, also compatible with V1,V2,V3,V4,V4.1,V4.2. .