[Enjoy Wireless Music Streaming] This car bluetooth receiver adds bluetooth functionality to many non-bluetooth devices via a 3.5mm AUX cable, such as non-bluetooth car audio systems, stereos, speakers, wired headphones. HI-FI music ultra-clear callOur Bluetooth car adopts professional high-definition audio decoding chip, allowing you to enjoy high-quality music streaming. CVC8.0 Noise Cancelling Technology helps to eliminate echoes and block out intrusive background noise, giving you clear sound during calls. [Hands-free calling and navigation] Built-in microphone, hands-free calling and "MFB" button to answer/hang up/reject/redial calls. This secondary Bluetooth receiver also supports the transmission of voice announcements from existing navigation applications. [Bluetooth 5.0 & Dual Paring] Built-in updated Bluetooth 5.0 chip, stable connection and fast transmission speed. The car bluetooth adapter is compatible with most bluetooth devices such as iPhone, Android smartphone, iPad, laptop, etc. Supports connecting 2 Bluetooth devices at the same time. Long battery life & Type-C chargingThis automatic bluetooth auxiliary device can be used for up to 16 hours normally. With the Type-C fast charging cable (in the box), it only takes 2.5 hours to fully charge. This Bluetooth music adapter can also be used while charging. PS: If the battery is full, the light will not light up when trying to charge it.