Superior Sound Quality: High quality 40mm drive unit, thick bass, bright treble. Let your ears feel the beat of the sound, and bring you a more comfortable listening experience.\nBluetooth 5.0: Easy to connect, no interference, no delay. Listen to music or call, HD resolution, more enjoyable experience.\nWireless and Wired Freely Switch: Not afraid of low battery, it can turn into a wired headphone in one second.