Product Parameters: Material: ABS Headphone Type: In-Ear Headphones Plug Diameter: 3.5mm Sounding Principle: Moving Coil Frequency Response Range: 20-20000 (Hz) Impedance: 28 () Sensitivity: 105 (DB) Distortion Rate: Less Than 2 (%) Wire Length: 1.1 (M) Speaker Diameter: 10 (Mm) Earplugs/Earmuffs Material: Environmentally Friendly Silicone Headphone Cable Material: Braided Cloth Rope Note: This Headset Does Not Have A Microphone, You Can Listen To Music, But Cannot Answer Calls Features: 1. In-Ear Sound Insulation Design, Effectively Blocking Environmental Noise, Quietly Enjoying Music, And Listening To Every Detail Of Music Clearly. 2. The Ear Shell Is Designed According To The Principle Of Ergonomics, Which Is Light And Delicate, Stylish And Cool. 3. It Is Comfortable And Stable To Wear, And The Earphones Will Not Fall Off During Strenuous Exercise. It Is Especially Suitable For Enjoying The Beauty Of Music While Exercising. 4. Extra-Thick Braided Wiring, High Fidelity, High Durability, Anti-Pull, Anti-Winding, Very Little Audio Signal Loss, Low Temperature Environment In Winter Will Not Be Hard Packing List: Headphone*1