Powertech FM Transmitter PT-958 device for easy and fast music playback on any car stereo with radio, without additional actions. select a blank frequency that is not broadcast by an active radio station, and synchronize your FM Transmitter and stereo on the same frequency to listen to music from the car speakers. It has a Handsfree function for you to receive calls and talk on the handset. It supports music playback directly from the mobile via the Bluetooth function, while it also has a USB port for charging your smartphone. Finally, it is powered by the car's cigarette lighter.