Material: PlasticCategory: Earphones & HeadphonesEarcups Type: Semi-openNumber Of Drivers: 2Charging Method: CableHeadphone Pads Material: OtherMagnet Type: OtherDriver Diameter: 40mmTotal Harmonic Distortion: 1%Impedance Range: up to 32 ΩBluetooth Version: 5.0Package List: User Manual,Charging CableFeatures: waterproof,With Microphone,Active Noice CancellingWith Microphone: YesIs wireless: YesSupport APP: YesSupport Memory Card: NoWaterproof: NoLine Length: 0mFrequency Response Range: 20 - 20000HzSensitivity: 96dBPlug Type: NONEFunction: For Internet Bar,for Video Game,Common Headphone,For Mobile Phone,HiFi Headphone,Sport,For OutdoorActive Noise-Cancellation: YesVolume Control: YesControl Button: YesVocalism Principle: DynamicWireless Type: bluetoothConnectors: 3.5mmCommunication: WirelessStyle: HeadphoneCertification: CEOrigin: Mainland ChinaBrand Name: Lenovo