HiFi music headphones six-core three-dynamic ring SD01 bass in-ear sport Running
It is a HiFi music headset six-core three-dynamic ring SD-01 bass in-ear headset, six-core voice, original sound presentation, high-definition six-dynamic ring, passive noise reduction, painless wearing, comfortable ear-to-ear, braided wire, high-definition microphone, can't be thrown off, surging bass.