| Features: Built-in microphone, when connected to the mobile phone BT, hands-free calls are supported, which is very convenient to use in the car. BT5.1 technology, lower power consumption, more stable audio signal transmission, the use distance of fewer than 10 meters. There is no built-in battery, and it is powered by a DC 5V USB interface. USB AUDIO OUTPUT MODE-If the device supports USB audio output function, plug, and play, no need for an audio cable. AUX AUDIO OUTPUT MODE-AUX mode requires an audio cable to link the product and audio equipment. With the 3.5mm cable, this Receiver Transmitter adapter can widely be used on your computer, laptop, home stereo system, headphone, smartphone, … | |