Description:Compatibility:3.5mm standard AUX jack is compatible with Smartphones, Tablets, MP3 and almost all 3.5mm audio devices.High Quality:Earphones feature Noise isolating technology that will allow you to flow in your world of Music.High powered dynamic speaker systems for an outstanding audio performance.Convenient]:Built-in microphone enables you to make and answer calls hands-free while doing sports.Durability:You don't have to worry about running out of power, give you unlimited wired listening.This lightweight in-ear headphone adopts double moving coil, which makes the middle and high frequency more natural and bass stronger. Noise-isolating in-ear design blocks ambient noise, helps you focus on listening pleasure.Built-in microphone enables you to make and answer calls hands-free while doing sports. Universal 3.5mm plug, compatible with almost all 3.5mm audio devices. You don't have to worry about running out of power, give you unlimited wired listening.Double moving coil headphones makes the middle and high frequency more natural and bass stronger.Noise-isolating in-ear design blocks ambient noise, helps you focus on listening pleasure.Built-in microphone enables you to make and answer calls hands-free while doing sports.Universal 3.5mm plug, compatible with almost all 3.5mm audio devices.You don't have to worry about running out of power, give you unlimited wired listening.Specifications:Product name: Sleep HIFI headsetSpeaker: 6mmFrequency range: 100-10000HzImpedance: 16Ω±15%Sensitivity: 95±3dBPlug type: 3.5mm cable length: 1.2mcolor：black,whitePacking size: 15*10*1Package weight: 15gPackage Included:1 * Wired headset