Material:Metal,Plastic Width[mm]:83 Depth[mm]:18 Height[mm]:17 Battery life up to[hours]:20 Voice assistant built-in:YES NFC Technology:No Sound Isolating:YES Category:Earphones & Headphones Earcups Type:Sealed Number Of Drivers:2 Charging Method:cable Headphone Pads Material:Memory Foam Magnet Type:Neodymium Driver Diameter:40mm Total Harmonic Distortion:0.1% Impedance Range:up to 32 Bluetooth Version:5.0 Features:With Microphone With Microphone:Yes Is wireless:Yes Support APP:No Support Memory Card:Yes Waterproof:No Resistance:32 Line Length:Nonem Sensitivity:84dBdB Plug Type:Line Type Function:For Mobile Phone,for Video Game,HiFi Headphone Active Noise-Cancellation:Yes Volume Control:Yes Control Button:Yes Vocalism Principle:Dynamic Wireless Type:bluetooth Connectors:USB Communication:WireLess Style:Headphone Certification:CE,FCC,RoHS Origin:Mainland China Brand Name:CATASSU Frequency:2.40GHz-2.48GHz version:bluetooth V5.0 effective distance:10meters Support system:Mobile Phone,Computer TV all have bluetooth function color:Red white black grey green Playing time:up to 20hours Power supply:powered by rechargeable 400MAH battery charge time:3hours Speaker:high quality 40 mm diameter speaker MP3 mode:support SD card playing MP3