Improved Connectivity Bluetooth 5.3 provides faster pairing and a more stable connection with clearer sound for both music and calls. Enjoy uninterrupted playback and seamless hands calling. Calls Built in microphone and speakerphone let you answer or reject calls effortlessly. Stay focused on the road and manage calls with ease while maintaining clear audio. Adjustable Frequency Convert any car stereo system into a Bluetooth speaker with our Bluetooth Car Adapter. Easily tune to any frequency between 87.5 108 MHz for wireless music streaming. No charging design This BT car adapter simply plugs into your car's integrated card slot to enjoy music and calls. Charging is hassle and requires no wiring. Plug in compatibility and performance Plug in design provides quick setup and a stable audio experience on standard car FM radios. Bluetooth 5.3 delivers reliable performance across compatible vehicles. Use cases Daily commute: hands calling and streaming music through the car stereo for safer, more convenient driving. Road trips: family playlists streamed over FM radio, easy frequency switching to reduce interference. Car rental or shared vehicles: quick, wire setup to enable Bluetooth audio without modifying the stereo.