A Dual USB Car Charger with FM Transmitter Phone Charger Bluetooth Handsfree LCD Display FM Modulator MP3 Player Car Charger Description: Plug and play for USB flash drive /TF card. Dual USB 3.4A fast charging. Connection with 2 phone at the same time. Safer with one-key loudspeaker. Brand Name:BASEUS Compatible Brand: MEIZU, LG, Xiaomi, APPLE, TZY, ZTE, Nokia, SONY, Motorola, Other, Blackberry, Samsung, HTC, Lenovo, Huawei, Universal Model Number: FM Transmitter Bluetooth Car Charger Quality Certification: RoHS,FCC,CCC,ce Output Interface:USB Input:12-24V/2.4A Power Source:Car Lighter Slot Type:Car Charger Support Quick Charge Technology:No USB Ports:2 Output:5V/2.4A Function:Voltage Detection, Noise Cancellation,Bluetooth Car Adapter Aux Supported Audio File Types:MP3, WMA, APE, FLAC, WAV and other hi-fi formats Support 1:TF card, U Disk Dapacity Up To 32G Support 2:Car MP3 Audio Player, Audio Player, Bluetooth Audio Player Feature 1:FM Modulator, Car-Charger, 3.4A Fast Charging, For iPhone Charger Feature 2:Car Charger For Mobile Phone, Charger For Phone,Dual USB Fast Charger Feature 3:USB Car Charger, Car Charge, Car Charger USB,Baseus Car Charger Feature 4:For Xiaomi Car Charger, For Samsung Charger,Bluetooth 4.2 USB Charger Feature 5:Support Bluetooth Hands-Free Phone Calling Feature 6:Battery Voltage Display, Multi-function Bluetooth Car Charger User Tips: 1.It is a normal phenomenon that FM product will have some noise because of the interference of the local radio signal.Find a vacant or non-interfered frequency and sync Onever device to that frequency for minimized static noise. 2.To achieve best audio quality,please set the volume on your phone or the device to maximum and then adjust the volume for your car stereo;you are not suggested to adjust volume of your car speaker to maximum (this will bring lot noise). 3.Suggest that RAM less than 32GB. larger than 32GB which may cause the abnormal reading. 4.Our products support the use of 12-24V normal battery in the car/truck,we recommend that you do not use the product in car/truck that modified the battery.This may cause burned because of instantaneous high current. 5.To protect this device,we recommend to remove it from cigarette outlet after use,to avoid instant high start voltage damage the device. ​ ​6.If you want to charge the phone and listen to the car radio at the same time, please note that your radio frequency and our device's frequency do not get too close.