Detailed Product Description Stereo Headphone description:1, Headband design,rugged stainless steel bars,adjustable.2, Electroplating ornaments combination, ... sound clarityDetail description:1, Headphone,Earphone,Headset,computer headphone,Computer headset,Earplug.2, Direct Factory.3, High ... -58dB±3 dBDirectionality:Omni-directionalMi-head impedence:≤2.2KΩSpeaker Diameter:40.0mmSpeaker impedence:32Ω ...