Features: 1. This FM transmitter transmits high-fidelity, balanced audio from your device to the car system, enhanced bass effect adds immersion to your driving experience while delivering excellent audio performance that effectively eliminates wind noise. 2. The Bluetooth car adapter is equipped with a PD 20W Type-C and USB charging ports, providing 80% faster charging speed than regular ports. 3. FM transmitter adapter support Bluetooth /USB disk/TF card/ MP3/WMA player. With anti-interference performance and CVC technology.Listening to music while charging. 4. The car's Bluetooth adapter with built-in microphone and call-handling features, switches to hands-free mode automatically from music playing status when receiving calls. 5. Roller Wheel Design, New flexible operation brings more experience. Specifications: Bluetooth version: Version 5.3 Bluetooth sound processing: with DSP technology and A2DP (Advance Audio Distribution Profile) function Bluetooth transmission distance: less than 10M Bluetooth microphone effective distance: 0.5- 2M Transmitting FM mode: Stereo digital PLL frequency locking Signal-to-noise ratio: more than 60dB Rated working voltage: 12V-24V Limit working voltage: 10~26V USB1: 5V=2.4A USB2: 5V=2.4A PD output: 5V=3.0A, 9.0V=2.77A PPS: 3.3-5.9V-3.0A 3.3-11.0V-2.25A Supported playback formats: MP3 / WMA / WAV / FLAC Working temperature: 0~50℃ Package include: 1X Car FM