It blinks once to pair it with the smartphone. We choose a free radio station on the car (eg 90.4) and then it connects to the transmitter through the dial at the bottom which greatly simplifies the operation (90.4 thus to wedge on the other). Once these stages, one can enjoy his music in Bluetooth from your smartphone. Better to put it near maximum and then adjust with the radio or with the transmitter wheel. If background noise on the frequency, which then will be reduced.
At the sound, I have no complaints. It is perfect. In the Nantes area, I use the 90.4 successfully. When you travel, it will take against by change frequency because no beach remains unoccupied throughout France. In addition, you can take calls using the multi-function button on the super high available (see video) .It rather convenient and, above all, this system will not be prohibited by the new law which will come into force on 01/07 / 15 which prohibits headsets. Evil side, the presence of a USB port for charging there is a smartphone while driving even if is limited to 1A.
This FM transmitter is excellent with easy access buttons and transforms into his car stereo and hands-free kit from grafted on a car stereo lacks Bluetooth origin. Additionally, sold just over 20 (20,99au I write this), it enjoys an unbeatable value.