Sentry Industries Inc. HM285 Stingers Stereo Earbuds with Mic, Green 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 built-in click control Omni microphone 9mm drive unit diameter for audio reproduction; acoustic chamber for a deep bass response Frequency: 20Hz - 20kHz; Impedance: 16 ohms 4-foot long cloth wrapped color cord for extra strength, with 3.5mm plug; soft and ultra-comfortable fitting silicone earpads Connectivity Technology: Wired