[Noise Reduction & High Fidelity Sound Quality] The latest noise processing technology, full duplex calling technology blocks more noise interference and provides you with clear and crisp hands-free calling sound. The upgraded Bluetooth 5.0 with technology can provide 2x stable transmission speed without distortion for high-fidelity stereo music and seamless transmission via Bluetooth and USB flash drive, you can enjoy high-fidelity mode and deep bass.[PD 30W and QC 3.0 Charging, 4 times faster] The wireless Bluetooth car adapter can quickly charge two devices at the same time via PD30W and QC3.0 ports, 4 times faster than standard chargers. The FM transmitter has built-in overcurrent protection, overvoltage protection, overcharge protection, overcharge protection, overheat protection and short circuit protection to ensure safe charging of the radio adapter charger. [Hose with Free Angle Adjustment] The hose of the wireless radio adapter offers you an adjustable viewing angle to