Description:Material: This anti-noise sleeping headphone is mainly made of TPE and silicone which is soft and comfortable to wear.Anti-noise: The wired sleep headphone is designed to be noise reduction so that is suitable for night sleeping.With microphone: This anti-fold headset has microphone so that can not only listen music but also can be used for voice call.Easy to use: The headset can be controlled by button if you can want to change song or answer call you just need press the button.Fit occasions: This noise cancelling earphone can be used in many occasions such as household bedroom or outdoor travelling hotel.Specification:Wearing method: in-ear.Headphone output audio source: universal.Whether wireless headset: wired headset.With or without a microphone: yes.Sound principle: moving coil.Frequency response range: 20-20000Hz.Impedance: 32Ω.Sensitivity: 20dB.Distortion rate: 10%.Wire length: Approx. 1.2m/47.24inch.Horn diameter: 6mm.Earplug/earmuff material: Silicone.Headphone cable material: TPE.Color: White, black.Note:There might be a few color distortions due to different computer resolutions.There might be a slight error due to different hand measurements.Package Includes:1 Piece Headset.