Material: MetalCategory: Earphones & HeadphonesActive Noise-Cancellation: YesVolume Control: NoControl Button: NoVocalism Principle: Hybrid TechnologyWireless Type: bluetoothCommunication: WIREDStyle: In-earOrigin: Mainland ChinaBrand Name: NoEnName_Null X-zero Original IEM Metal in-ear headse HIFi Noise Reduction Mobile Computer Ga