Material:PVC,ABS,Plastic,Silica gel; Width[mm]:5; Depth[mm]:6; Weight[g]:150; Height[mm]:6; Battery Capacity[mAh]:300; Battery life up to[hours]:3~4 Hours; Voice assistant built-in:NO; Maximum wireless range[m]:<10m; NFC Technology:NO; Sound Isolating:YES; Category:Earphones & Headphones; Earcups Type:Sealed; Max Output:21mW; Number Of Drivers:2; Charging Method:Cable; Headphone Pads Material:Silicone; Magnet Type:Neodymium; Driver Diameter:2mm; Total Harmonic Distortion:1%; Impedance Range:up to 32 ; Bluetooth Version:5.3; Package List:User Manual,Charging case,Charging Cable,Replaceable Pads Set; Features:waterproof,With Microphone,Amazon Alexa Support,Apple Siri Support,Detachable Cable,Active Noice Cancelling,Dual Connection,Playback Control,Google Assistant Support;