NO MORE CORDS : Bluetooth aux adapter can simply be used to upgrade your car stereo or home old speakers theatre amplifiers to wireless Bluetooth instantly. It can be Bluetooth paired with all the Bluetooth-enabled devices such as smart phones tablets laptops. EASY TO USE : Aux to Bluetooth adapter is very easy to install and does not require any technical knowledge. You just need to turn on your Bluetooth adapter and Pair it with your smart phones then plug it into the aux-in port of your car stereo or any other home stereo speaker sound system. This Bluetooth aux adapter is equipped with a highly sensitive silicon microphone ensuring loud and clear calls in complex environments without any echo. You grip the steering wheel tightly with both hands to ensure driving safety while enjoying music to the fullest. This Bluetooth aux adapter car only work for car or home stereo that with standard 3.5mm aux port. It can not pair with your Bluetooth headphone or Airpods because it is only a Bluetooth aux receiver (RX Mode) not transmitter (TX mode). Please select our AIR99 in the store for a TRANSMITTER. The design of this Bluetooth aux receiver comes from a bullet head with a delicate size and is currently the smallest Bluetooth adapter in the world. Although it is small our engineers can still continuously optimize the structure to achieve a battery life of up to 6 hours. This Bluetooth aux adapter for car is equipped with the most advanced Bluetooth 5.3 chip which ensures fast and stable connection and provides high-quality sound effects. Charging while using can solve your travel anxiety. And this car aux Bluetooth adapter can be used for 6 hours after charging for 2.5 hours This Bluetooth receiver can connect two phones at the same time but only one phone can work at the same time. You can switch back and forth between different people's phone as needed. This aux Bluetooth adapter for car is equipped with a built-in noise cancelling chip which ensures that calls and music quality are not lost due to noise. You can still hear the pure and clear sound effect. Bluetooth aux jack BT aux adapter for car Bluetooth Aux Transmitter USB BT aux adapter