--Octa-core sound / 9D strong bass / comfortable to wear
--9D surround bass, full explosion of octa-core energy
--Metal shell, high-definition microphone, multiple noise reduction
--K song recording, composite diaphragm, comfortable semi-in-ear
--Eight times the shock without losing high sound quality
--Brass support, reduce resonance, clear sound without noise
--Professional tuner debugging, more accurate sound