The TaoTronics TT-BR05 Bluetooth Receiver / Car Kit is a portable wireless audio adapter that allows for seamless connectivity to your home or vehicle audio systems. With Bluetooth v4.0 standard and built-in microphone, this adapter provides high-quality sound and convenient hands-free calling. The 3.5mm jack connector ensures compatibility with a wide range of audio devices, making it a versatile option for enhancing your audio experience. Ideal for those looking to enjoy their favorite music or take calls on the go without the hassle of wires.