Features:1. High Quality: Earphones feature noise isolating technology that will allow you to flow into your world of Music. high powered dynamic speaker systems Compatible with excellent audio performance.2. Convenien: Built-in microphone allows you and calls hands-free while exercising.3. Volume adjustable: Don't worry about running out, give you unlimited listening, with volume adjustment function.4. This lightweight in-ear headphone adopts double moving coil, which makes the high frequency more natural and bass stronger.5. Noise-isolating in-ear design blocks ambient noise, helping you focus on listening pleasure.Description:3.5mm standard AUX jacks is compatible with Smartphones, Tablets, MP3 and almost all 3.5mm audio devices.Specifications:Headphone type: in-ear headphonesWearing method: in-earHeadphone output source: generalPlug diameter: 3.5mmPlug type: in-line typeWith or without microphone: YesSound principle: moving coilFrequency response range: 20-20000 (Hz)Impedance: 32 ()Sensitivity: 96-110 (dB)Distortion rate: 0.1 (%)Wire length: 1.2 (m)Speaker diameter: 10 (mm)Earplugs/earmuffs material: siliconeHeadphone cable material: TPEPackage Included:1 pc * In-ear headphonesNotes:1. Please allow 0-1 inch error due to manual measurement. Thanks Compatible with your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from real object.