Features 1.Noise Reduction: Built in noise reduction microphone which can clearly pick up your voice anti static high sensitivity and provide you with high quality communication. 2.330 Adjustable: The headset microphone pole can be twisted 330 adjusted to the most comfortable position to ensure accurate pickup of your each word. 3.Dual Plug: Equipped with a USB plug supports volume control provides additional PC USB options and can also use 3.5mm jacks to connect tablets phones and other devices. 4.Ultra Comfortable: Lightweight material and ergonomic design protein leather ear pads breathable and sweat absorbing soft memory foam fits your ears comfortable to wear all day. 5.Compatible: The headphone is widely compatible with for windows 7 8 10 xp vista for OS X for ios for android tablet computers and most devices with 3.5mm or USB audio jacks. 6.Multi Scene Application: This headset is very suitable for online courses call centers conference calls webinar presentations home work school children's learning etc. Specification Item Type: HeadphoneMaterial: ABS MetalWire: Headphone Cable Length: Approx. 1.9m/6.2ft Conversion Cable Length: Approx. 1.7m/5.6ft Total Length: Approx. 3.6m/11.8ftHeadset ParametersSpeaker Diameter: Approx. 28mm/1.1inFrequency Response: 20-20000 HzImpedance: 150Distortion Rate: Less Than 1%Sensitivity: 111dB3dB/mw at 1kHzMicrophone ParametersFrequency Response: 20-20000HzImpedance: 32Sensitivity: 100dB3dBSignal to Noise Ratio: -33dBDistortion Rate: Less Than 1%Range: OmnidirectionalModel: XY-100B-2DU Package List 1 x Headphone1 x Conversion Line Note 1. measurement please allow some errors.2. Please point the microphone to your mouth to get the best call effect.