Features:1.The new model of closed earphone; earphone without muffle; fashionable compact fuselage without muffle carries dual-unit speaker; so as to achieve clearer sound quality and make you listen more addictive.2.Specially customized high-performance magnetic circuit 10-vibrator film + voice coil + external one; shocking sound quality as if in the concert scene.3.Based on ergonomics design; combined with human Earrings design; two wearing methods; can wear for a long time without pain; do not fall in running fitness cycling using ear-wound wear; more solid.4.Four-core double-action coil; more clear sound quality.Descriptions:1.Optimum design of tuning after testing by a tuner to make the sound more authentic.Specifications:Color: goldWearing method: in-earHeadphone output source: portable audio and videoPlug diameter: 3.5mmPlug type: straight typeWhether wireless headphones: wired headphonesWith or without a microphone: YesSound principle: dynamic circleSensitivity: 95±3 (dB)Style:Sports HeadphonesNotes: 1.Due to the difference between different monitors; the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.2.Due to the manual measurement and different measurement methods; please allow 1-3mm deviation. Thanks!