Wireless Audio Solution: Transmit mode TX and Receive mode RX are integrated into Blue Tooth Car Adapter, giving you a free switch between modes and seamless audio streaming. Solve all your audio needs hassle-free. Stay Safe on the Road: Free Call and Blue Tooth Connectivity. Connect with ease to your car stereo and enjoy hands-free conversations and dynamic music with this Blue Tooth Transmitter. T Seamless Connectivity: Stream music and take hands-free calls wirelessly with ease by connecting our Car Blue Tooth Adapter to your car's interface. High Functionality: Our Blue Tooth Transmitter Car boasts stable signal transmission with Blue Tooth 5.3 smart chip, enabling seamless connectivity sans freezing issues, all while using minimal power. Long Life: Blue Tooth Transmitter Car built-in rechargeable lithium battery, long life, not only low power can be used while flushing, but also convenient Specifications Product Name: Blue Tooth Car Adapter Size: about 6*2.2*1.3cm Weight: about 100g Product List: 1*Blue Tooth Car Adapter 1*Instruction manual 1*Power Cord 1*3.5MM Audio Head Notes: Please allow 0.5cm/0.20in error due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item, hope you can understand.