Item Details: * brand new and high quality. * DUAL USB CAR CHARGER : 2 USB charging port to charge most USB devices.Input 12v/24v,1A port with USB reading and charge function;smart 3.1 A charge port which can intelligently identify devices and charging. * BLUETOOTH AND MORE COMPATIBILITY : Wireless Bluetooth FM transmitter adapter for car radio/cassette,Transfer Calling / MP3 Music / Cellphone Voices to car radio speaker.(FM range from 87.5 to 108 Mhz). 5% every hour low power consumption when use bluetooth play music. Mobile navigation,Voice broadcast . Compatible for Smartphones and device with Bluetooth. * HANDS FREE FUNCTION : Built-in Microphone,Switch to Hands-free mode automatically from music playing status when receiving calls.Answer/Reject/Hand up/Recall all in key. * CAR BATTERY VOLTAGE FUNCTION : Show 3 seconds voltage when plug into the port.Always keep battery state of health.Then it turn to automatic play mode. * MUSIC PLAYING FUNCTION : Support Bluetooth Music/ USB Disk/ TF Card / MP3/WMA player. With anti-interference performance and noise suppression (CVC) technology.Listening to music while charging.Automatically connect memorized paired when power on.12-month worry-free Guarantee * Enjoy music and handsfree call on the road. Specifications: *Condition: brand new *Model: 9 Bluetooth V 5.0 *Working Voltage: 12V~24V *USB interface: 3pcs (QC3.0, USB2.4A, U disk socket) *Output Current: QC3.0 Fast Charging 6.5V-9V 2A, 9V-12V 1.5A; Standard Fast Charging 2.4A, 1A *Output voltage: 5V-12V *Working temperature: