1. Frequency Modulation: Turn on car radio and select no broadcast frequency
2. Frequency Match: Insert this FM transmitter into car cigarette lighter socket and set the same frequency
3. Insert memory card or USB flash drive to FM transmitter, or connect your phone with FM transmitter via bluetooth.
4. Then the FM transmitter will automatically play the music in your memory card, USB flash drive or mobile phone.
5. Answering/redialing/dismissing or ending call just simply click a button by remote control