Product Features: 1, Bluetooth V5.0, support most of bluetooth devices and lower power consumption 2, 2000mAh charging case can full charge 2 earphones around 10 times, offer more music time. 3, With waterproof technology, no need to worry about water and sweat anymore 4, 8mms dual drive units, enjoy 9D strong deep bass music sound 5, Popular one button control function, support switch songs, phone call and call voice assiatant.