Built-in dual antennas 80M long-distance transmission, using 2.4GHz wireless transmission technology, stable signal transmission, high-definition audio transmission.<br>Large-capacity battery and long-lasting. Using a 18650 lithium battery with a capacity of 900MAH and replaceable USB data cable for power supply. It can be used for 6-8 hours when fully .<br>48KHZ sampling rate, high-fidelity reproduction of timbre, high-performance decoding chip, dynamic range signal-to-noise ratio 110DB, accurate restoration of sound details.<br>L-shaped connector, L-shaped connector, compact and space-saving, more convenient to use.<br>Smart compatible multi-device connections,Easy and convenient to use, enjoy the fun of wireless transmission.<br><br>Type:B:One for two<br>Colour:Black<br>Material:Metal<br><br>Package Contents:<br>2 * Microphone Transmitter Receiver<br>1 * Microphone Receiver<br>3 * Adapter<br>1 * USB Cable<br><br>Only the above package content, other products are not included.<br>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.