Brand Name: BASEUSBASEUS Model: B51Style: In-earVocalism Principle: DynamicControl Button: YesActive Noise-Cancellation: YesCommunication: True WirelessVolume Control: YesSensitivity: 0dBWireless Type: bluetoothIs wireless: YesMax Output: 0mWCertification: CECertification: RoHSLine Length: 0mSupport APP: YesFunction: for Video GameFunction: Common HeadphoneFunction: For Mobile PhoneFunction: HiFi HeadphoneFunction: SportNumber Of Drivers: 2Plug Type: NONEPackage List: User ManualPackage List: Charging casePackage List: Charging CablePackage List: Replaceable Pads SetImpedance Range: from 33 to 100 ΩConnectors: Type cModel Number: SIMU TWS S1Earcups Type: SealedHeadphone Pads Material: OtherBluetooth Version: OtherCodecs: AACCodecs: sbcSupport Memory Card: NoDriver Diameter: 0mmResistance: 30ΩWaterproof: YesFrequency Response Range: 20 - 20000HzTotal Harmonic Distortion: 1%With Microphone: YesFeatures: waterproofFeatures: With MicrophoneFeatures: Apple Siri SupportFeatures: Active Noice CancellingFeatures: Dual ConnectionFeatures: Playback ControlCharging Method: Charging caseMagnet Type: OtherBattery capacity1: 40mah/0.148wh(earphones)Battery capacity2: 380mah/1.406wh(charging case)BLUETOOTH: 5.1