Stable and Fast Transmission: Bluetooth car adapter uses Bluetooth 5.0 chip to maintain a stable connection. Low power consumption, high speed, and stable signal transmission make listening to songs smoother. Enjoy a new wireless audio experience at any time.Compact Design for Easy Portability: The AUX Bluetooth adapter takes up little space, so you can take it anywhere. Connect it to your vehicle, speakers, or any headphone jack, and the 3.5mm jack design gives you no tangled cords to untangle.AptX Low Latency: Hands-free Bluetooth call and navigator voice via built-in microphone; Bluetooth headphone adapter 4-hour continuous work via the built-in li-ion rechargeable 140mAh battery.2-in-1 Bluetooth Transmitter Receiver: Portable aux bluetooth adapter for carcan turn your favorite old non-Bluetooth device into a modern wireless Bluetooth device.