Bring Bluetooth connectivity to almost any car with Nulaxy Bluetooth FM transmitter. Broadcast audio on an FM bandwidth to enjoy your music or make hands-free calls while you drive.User Tips: 1. Please check if both the car radio and transmitter are on the same station. If not, please set Both of them on the same station. 2. If there are statics when you listen to music, the key really to find a vacancy frequency which is an isolated fully static (sounds awful but keep going) station before you match the transmitter to the full static radio station. For example, one works best on low frequencies (Colorado) 88.9 or so. The high frequencies (102.5+) Do not out as well. 3.If there is no sound when you make a phone call, you can try to turn up the voice call volume on your cell phone and volume of the transmitter. 4. Find a vacant or non-interfered frequency and sync Nulaxy device to that frequency for minimized static noise. 5. To achieve best audio quality, Please set the volume on your phone 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).