Material: PlasticCategory: Earphones & HeadphonesEarcups Type: Semi-openMax Output: 550mWNumber Of Drivers: 2Charging Method: Charging caseHeadphone Pads Material: SiliconeMagnet Type: FerriteDriver Diameter: 5mmTotal Harmonic Distortion: 1%Impedance Range: up to 32 ΩBluetooth Version: 5.0Package List: Charging Cable,User Manual,Charging caseFeatures: With MicrophoneCodecs: NONEWith Microphone: YesIs wireless: YesSupport APP: YesSupport Memory Card: NoWaterproof: NoResistance: 32ΩLine Length: 0mFrequency Response Range: 20 - 20000HzSensitivity: 123dBPlug Type: Line TypeFunction: HiFi Headphone,Sport,for Video GameActive Noise-Cancellation: YesVolume Control: YesControl Button: YesVocalism Principle: DynamicWireless Type: bluetoothConnectors: USBCommunication: WirelessStyle: In-earCertification: NONEOrigin: Mainland ChinaBrand Name: SCELTECH NEW E90 TWS Wireless Earphone Bluetooth 5.3 Earbuds Stereo Noise Reduction Head