xtraem H4000 Pro Series Premium Cloth Cord Earbuds Great for use with smartphones, cellphones, iPod, iPad, iPhone, MP3 player, tablets, PCs and laptops, DVD players, gaming and more Listen to music and talk to friends with in-line click control microphone; easily fast forward, play, pause and rewind music, adjust volume, hang up and answer calls 8mm driver diameter unit for deep bass, crisp highs and high definition sound Frequency: 20Hz - 20kHz; Impedance: 16 ohms; Sensitivity: 112dB +/- 3dB 4-foot long tangle proof braided cloth cord with 3.5mm plug; soft and secure silicone earpads; includes zippered carrying case for earbuds