ANC Bluetooth Headphones Active Noise Cancelling

Brand Name: VIKEFONVocalism Principle: Hybrid technologyControl Button: YesActive Noise-Cancellation: YesCommunication: WirelessVolume Control: YesStyle: HeadphoneWireless Type: BluetoothIs wireless: YesSupport APP: NoFunction: for Video GameFunction: For Mobile PhoneFunction: HiFi HeadphoneFunction: SportPlug Type: Line TypePackage List: User ManualPackage List: ChargerPackage List: Charging CablePackage List: 3.5mm Jack AdapterPackage List: Detachable Audio CableConnectors: 3.5mmModel Number: EL528 ANC Active Noise Cancelling Bluetooth HeadphoneBluetooth Version: 5.0Codecs: AACCodecs: SBCSupport Memory Card: NoWaterproof: NoWith Microphone: YesFeatures: With MicrophoneFeatures: Active Noice CancellingCharging Method: BatteriesLine Length: 0.8mColor: Black Red BlueBattery Capacity: 400mAhWorkingTime: 30hours The manual was 10 hours, but it actually reach 20-30 hours