Brand Name:jiansu Style:On-ear Vocalism Principle:Dynamic Origin:Mainland China Active Noise-Cancellation:No Control Button:No Communication:Wireless Volume Control:Yes Certification:CE Number Of Drivers:2 Plug Type:Line Type Impedance Range:up to 32 Ω Support Memory Card:No Waterproof:No Frequency Response Range:20 - 20000Hz Wireless Type:Bluetooth Line Length:0m Resistance:32Ω Is wireless:Yes Earcups Type:Sealed Bluetooth Version:5.0 Charging Method:Cable Support APP:No Function:Common Headphone Function:For Mobile Phone Function:HiFi Headphone With Microphone:No