The Marvels Car FM Transmitter models CP115, C36, and C20 offer a versatile solution for in-car audio. These transmitters allow you to stream music from your smartphone to your car FM radio, making it easy to enjoy your favorite tunes on the road. They also feature USB ports for charging your devices while driving, as well as hands-free calling capabilities. With easy-to-use controls and a compact design, these FM transmitters enhance your driving experience by bringing modern connectivity to any vehicle.