Advanced Bluetooth 5.0 technology: This car bluetooth adapter can be connected via 3.5mm AUX adapter, Bluetooth receiver with Bluetooth 5.0 technology, stable connection / fast transmission speed / wide signal range / high quality sound. Smart Noise Canceling Technology: Our Bluetooth audio receivers feature the latest CVC8.0 noise canceling and Digital Signal Processor (DSP) technology to cancel echoes and block out annoying background noise such as wind, traffic or crowds, giving you crystal clear call audio. Hands-free calling and navigation: The built-in microphone helps you to speak hands-free. One-touch function allows you to answer/redial/hang up/reject calls with handsfree while driving, and Bluetooth audio adapter supports voice prompt transmission through existing navigation apps. Make sure you drive safely . Up to 8 hours of battery life: This AUX Bluetooth adapter works up to 8 hours for calls or music playback. Fully charge your device in just 1.5 hours with the included fast charging cable. Broad Compatibility: The portable Bluetooth stereo adapter can be paired with 2 devices at the same time. Compatible with most smartphones and Bluetooth electronics, ideal for home or car audio systems, ideal for home or car audio systems.