Features: Single and binaural freely switch, double host, double channel, left and right ears freely use. Eight-core loudspeaker, HiFi high fidelity sound quality, vivid shocked stereo sound. Adopts CVC8.0 intelligent noise reduction call and music, the call was as clear as face to face. Portable energy box, clear electric quantity display, not only provides strong endurance for earphones, but also can energy for mobile phone. Daily level waterproof and sweatproof, daily and sports wear effective stop of sweat damage components. New BT5.0, strong inner core, longer transmission distance, stronger signal stability, lower standby consumption. Upgrade intelligent tap control, one-key blind press design, simple and convenient. Three point fit senseless design, skin-friendly and comfortable wearing feel.