1.FOUR-CORE PRONUNCIATION,NO NOISE AND NO LEAKAGE.Coexistence of appearance and sound quality. 2. GOOD SOUND OUALITY CAN'T DO WITHOUT GOOD WIRE.The wire is made of TPE material 50% pull commission Flexible without knotting. 3. WIRE ASSISTANT,CONVENIENT OPERATION TO CALLAT ANYTIME.Built-in high-definition silicon microphone.Super clear call and karaoke. 4. LIGHT AND STABLE COMFORTABLE TO WEAR.