<ul><li>Bluetooth V5.1, support most of bluetooth devices and lower power consumption</li><li>2000mAh charging case can full charge 2 earphones around 15 times, offer more music time</li><li>With waterproof technology, no need to worry about water and sweat anymore</li><li>8 mms drive units, enjoy 9D strong deep bass music sound</li><li>Popular touch control, support switch songs, phone call, volume control and call voice assiatant</li></ul>