Usage Tips:[Bluetooth 5.0 adapter]: On hand, Bluetooth 5.0 greatly improves the speed of audio data transmission, allowing you to listen to music without delay while ensuring lower latency and high sound quality, and on the other hand, it extends the effectiveness Time for calls. The transmission distance can reach 10 meters to meet your . [Hands-free calling and navigation]Bluetooth car adapter. Built-in microphone, one-touch multi-function button to answer/hang up/reject or redial calls. Connect the Bluetooth port's 3.5mm AUX dongle to your car's AUX jack and connect your phone to your car's audio system so you can not only make calls, but also listen to dynamic music and stream voice notifications from your existing navigation app. [CVC8.0 Noise Cancellation]: Our Bluetooth audio receiver utilizes CVC8.0 noise cancellation technology to clear hearing and true voice transmission. Eliminates echoes and blocks distracting background noise (such as wind, traffic or crowds) to give you a CD-like music experience. [Dual connection]:The portable Bluetooth receiver can be paired with 2 devices at the same time.You can enjoy music and no longer have to worry about missed calls. After pairing, the car receiver automatically reconnects to the last paired Bluetooth device (as long as it is within range). [Scope of delivery]1 x USB Bluetooth adapter, 1 x 3.5 mm audio cable.1 manual Offer your customers a satisfaction . If there is any problem with the product in the package, we hope you Colour:Black Material:MetalandPlastic Package Contents: 1x Host 1x charging cable 1x 3.5 audio head 1x Chinese and English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.