3.6A Quick USB Charger Bluetooth Music Player FM Transmitter Phone Handsfree Carkit

User Tips: If you want to use Bluetooth hands-free calling or listening to music, you need to turn the car radio frequency to same as MP3 bluetooth 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 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 nois 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. Material : ABSType: Bluetooth Car KitItem Weight: 70gSpecial Features: FM TransmitterItem Size: 3.5*3.5*8cm / 1.4*3" (L*W*H)Bluetooth Name: BT28Files Supported: MP3/ WMA / WAV / APE / FLACInput voltage: DC 12-24VU Disk Capacity Supported: Class 10, Max up to 32GUSB output: 5V/3.6A maxFM frequency: 87.5-108MHz Note:If you have any questions about the operation of the machine, please contact us by email, because each product is operated differently, we will solve it for you, thank you // //