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 static noise).
3. Suggest that the SD Card be less than 32GB. Larger than 32GB 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.
FM Transmitter FM Modulator Bluetooth Handsfree Car Kit Lighter Car MP3 Player Car-covers Car-styling