Features:Automatic search for unused stations and one second pairing: never worry about not finding unused stations. This car Bluetooth FM transmitter can automatically find unused radio stations, just press the "ch / a" button twice, which is the simplest pairing method without interference. One second pairing your car, automatic radio search efficiency is more than 50%, compared with the normal FM transmitter on the market.3 USB ports and qc3.0 fast charging: input 12-24 V, output 3 USB ports: fast charging for qc3.0 devices, 4 times faster than standard charger, charging compatible devices to 80% in 35 minutes. Another USB charging port supports 5V / 2.4a output, which can intelligently identify Android or other devices. In addition, the top of the USB port is only used for U-disk reading. Support charging 2 sets of equipment with FM transmitter at the same time. Share charging ports with friends while listening to music.Crystal sound and 5 EQ mode: FM Bluetooth transmitter adopts CVC noise elimination technology. It has excellent sound quality when playing through USB flash disk / TF Card / Bluetooth / aux in. It supports 5 EQ mode: Classic / / Rock / Jazz / normal music style. Please note that it is only available when you insert USB flash disk or TF card.Hands free call and power off: with built-in microphone, the voice of hands-free call is loud and clear, making your driving safer, safer and more convenient. This Bluetooth Car transmitter adopts the first-class Bluetooth chip, with stronger and more stable connectivity and no random disconnection fault. In addition, FM transmitters can save your car battery: just press the button long enough to turn off the power, without having to plug it or unplug it from your car socket each time.Package content:FM transmitter 1