Product Details : BOAT 131 MARVEL EDITION CAPTION AMERICA IRON MAN WAKANDA FOREVER ALL 3 EDITION AVAILABLE FUELLED BY PASSION #divanya9950786 Features ???????? ? True wireless stereo, left and right channel separation, HIFI sound ? Both the left and right ears have a full Bluetoth headset function, which can be used alone or in paire ? Dual Mode Bluetooth 5.0, ultra iow power consumption ? Bluetooth transmission distance: 10 meters ? Charge box charging: about 3 times ? Charging box charging time: 1 hour