BH4 Business Bluetooth Headset Wireless Earhook Earphones Dual Microphone Stereo Earbuds Handsfree H
Style : In-earVocalism Principle : DynamicOrigin : Mainland ChinaActive Noise-Cancellation : YesControl Button : YesCommunication : WirelessVolume Control : YesModel Number : Lenovo-BH4Support Memory Card : NoWaterproof : NoFrequency Response Range : 20 - 20000HzLine Length : 0mResistance : 32ΩIs wireless : YesBluetooth Version : 5.0Function : For Internet Bar,Common Headphone,SportWith Microphone : Yes