Bluetooth 5.0This bluetooth audio transmitter use upgraded high-performance smart Bluetooth 5.0 chip, makes the signal transmission more stable and faster. Tune the FM radio to a blank radio station between 87.5-108.0MHz, the bluetooth car adapter can transmit music directly from the mobile phone to the car audio system. Background noise reduction processing technology can give you a excellent listening experience.Three Charge PortsThe bluetooth fm transmitter for car has two USB ports and a Type-C PD port. Supports charge 3 devices simultaneously with overcharge and overvoltage protection. One port of this bluetooth adapter is QC3.0 which will charge your devices 4X faster than normal chargers. Another 5V/2.4A USB port can read USB disk or charge as you need. No more slow or inadequate charging situation in car.Hands-free CallsThe aux bluetooth adapter for car has a built-in High-sensitivity microphone with echo cancellation and noise suppression HSP technology, which can provide a clear call while you are driving. Answer/reject/hang up/recall all in One button. Seamlessly switch between incoming calls and music, which makes driving much safer and more convenient.Stable playbackOur bluetooth adapter for car increases the buckle area, and the anti-skid shrapnel on both sides are lengthened to ensure that the transmitter maintains a stable uninterrupted power state under bumpy road conditions. The built-in processor provides high-resolution, high-performance stereo sound, giving you lossless sound quality. Power-off memory playback function, can automatically connect back to FM after power-on.CompatibilityThe car bluetooth fm transmitter is equipped with dual-core processor that compatible with Android and IOS systems, fully compatible with Apple, Samsung, Xiaomi, Huawei, HTC, Nokia and other digital phones and tablets, and also compatible with Spotify, Apple Music, Youtube Music, Instagram, Facebook and other vocal software Apps.