The monaural headset has a part of flexible air tube is more convenient to use during driving and sportingProfessional audio-visual， cut off the noise， the sound quality is fidelityThe product is away from electromagnetic， more environmental and have anti-radiation functionStay away from the electromagnetic， safe driving， convenientFlexible， to prevent twisting， durableThe product suitable for IOS and Android devices via regulating switchBuilt-in MICWith answer and hand up buttonCompatible with for Samsung， for HTC， for MOTO， for Sony Ericsson， for Nokia， for Lenovo， for Huawei， for ZTE， for Millet， for Meizu， for Amoi， for Grand， for Coolpad， etc which with 3.5mm Aux jack.Operation:The product with a button to control the phone， put one time to receiving， hang up calls and pause music;put two times to restore the music playing during music pausing; put two times directly to switch to the next song Specifications:Plug: 3.5mmImpedance: 32����20% 10MMFrequency Range: 20Hz~20kHzRated power : 100mwSensitivity : 102db S.P.LAT 1KHZEarphone Length: Approx. 1M/3.3FT Package Included:1 x Anti-radiation Earphone1 x Ear-bud1 X User Manual